Exxon Mobil Corp. v. Allapattah Services, Inc.Annotate this Case
545 U.S. ___ (2005)
OPINION OF THE COURT
EXXON MOBIL CORP. V. ALLAPATTAH SERVICES, INC.
545 U. S. ____ (2005)
SUPREME COURT OF THE UNITED STATES
NOS. 04-70 AND 04-79
EXXON MOBIL CORPORATION, PETITIONER
ALLAPATTAH SERVICES, INC., et al.
on writ of certiorari to the united states court of appeals for the eleventh circuit
MARIA del ROSARIO ORTEGA, et al., PETITIONERS
STAR-KIST FOODS, INC.
on writ of certiorari to the united states court of appeals for the first circuit
[June 23, 2005]
Justice Kennedy delivered the opinion of the Court.
These consolidated cases present the question whether a federal court in a diversity action may exercise supplemental jurisdiction over additional plaintiffs whose claims do not satisfy the minimum amount-in-controversy requirement, provided the claims are part of the same case or controversy as the claims of plaintiffs who do allege a sufficient amount in controversy. Our decision turns on the correct interpretation of 28 U. S. C. §1367. The question has divided the Courts of Appeals, and we granted certiorari to resolve the conflict. 543 U. S. ___ (2004).
We hold that, where the other elements of jurisdiction are present and at least one named plaintiff in the action satisfies the amount-in-controversy requirement, §1367 does authorize supplemental jurisdiction over the claims of other plaintiffs in the same Article III case or controversy, even if those claims are for less than the jurisdictional amount specified in the statute setting forth the requirements for diversity jurisdiction. We affirm the judgment of the Court of Appeals for the Eleventh Circuit in No. 04–70, and we reverse the judgment of the Court of Appeals for the First Circuit in No. 04–79.
In 1991, about 10,000 Exxon dealers filed a class-action suit against the Exxon Corporation in the United States District Court for the Northern District of Florida. The dealers alleged an intentional and systematic scheme by Exxon under which they were overcharged for fuel purchased from Exxon. The plaintiffs invoked the District Court’s §1332(a) diversity jurisdiction. After a unanimous jury verdict in favor of the plaintiffs, the District Court certified the case for interlocutory review, asking whether it had properly exercised §1367 supplemental jurisdiction over the claims of class members who did not meet the jurisdictional minimum amount in controversy.
The Court of Appeals for the Eleventh Circuit upheld the District Court’s extension of supplemental jurisdiction to these class members. Allapattah Services, Inc. v. Exxon Corp., 333 F. 3d 1248 (2003). “[W]e find,” the court held, “that §1367 clearly and unambiguously provides district courts with the authority in diversity class actions to exercise supplemental jurisdiction over the claims of class members who do not meet the minimum amount in controversy as long as the district court has original jurisdiction over the claims of at least one of the class representatives.” Id., at 1256. This decision accords with the views of the Courts of Appeals for the Fourth, Sixth, and Seventh Circuits. See Rosmer v. Pfizer, Inc., 263 F. 3d 110 (CA4 2001); Olden v. LaFarge Corp., 383 F. 3d 495 (CA6 2004); Stromberg Metal Works, Inc. v. Press Mechanical, Inc., 77 F. 3d 928 (CA7 1996); In re Brand Name Prescription Drugs Antitrust Litigation, 123 F. 3d 599 (CA7 1997). The Courts of Appeals for the Fifth and Ninth Circuits, adopting a similar analysis of the statute, have held that in a diversity class action the unnamed class members need not meet the amount-in-controversy requirement, provided the named class members do. These decisions, however, are unclear on whether all the named plaintiffs must satisfy this requirement. In re Abbott Labs., 51 F. 3d 524 (CA5 1995); Gibson v. Chrysler Corp., 261 F. 3d 927 (CA9 2001).
In the other case now before us the Court of Appeals for the First Circuit took a different position on the meaning of §1367(a). 370 F. 3d 124 (2004). In that case, a 9-year-old girl sued Star-Kist in a diversity action in the United States District Court for the District of Puerto Rico, seeking damages for unusually severe injuries she received when she sliced her finger on a tuna can. Her family joined in the suit, seeking damages for emotional distress and certain medical expenses. The District Court granted summary judgment to Star-Kist, finding that none of the plaintiffs met the minimum amount-in-controversy requirement. The Court of Appeals for the First Circuit, however, ruled that the injured girl, but not her family members, had made allegations of damages in the requisite amount.
The Court of Appeals then addressed whether, in light of the fact that one plaintiff met the requirements for original jurisdiction, supplemental jurisdiction over the remaining plaintiffs’ claims was proper under §1367. The court held that §1367 authorizes supplemental jurisdiction only when the district court has original jurisdiction over the action, and that in a diversity case original jurisdiction is lacking if one plaintiff fails to satisfy the amount-in-controversy requirement. Although the Court of Appeals claimed to “express no view” on whether the result would be the same in a class action, id., at 143, n. 19, its analysis is inconsistent with that of the Court of Appeals for the Eleventh Circuit. The Court of Appeals for the First Circuit’s view of §1367 is, however, shared by the Courts of Appeal for the Third, Eighth, and Tenth Circuits, and the latter two Courts of Appeals have expressly applied this rule to class actions. See Meritcare, Inc. v. St. Paul Mercury Ins. Co., 166 F. 3d 214 (CA3 1999); Trimble v. Asarco, Inc., 232 F. 3d 946 (CA8 2000); Leonhardt v. Western Sugar Co., 160 F. 3d 631 (CA10 1998).
The district courts of the United States, as we have said many times, are “courts of limited jurisdiction. They possess only that power authorized by Constitution and statute,” Kokkonen v. Guardian Life Ins. Co. of America,511 U. S. 375, 377 (1994). In order to provide a federal forum for plaintiffs who seek to vindicate federal rights, Congress has conferred on the district courts original jurisdiction in federal-question cases—civil actions that arise under the Constitution, laws, or treaties of the United States. 28 U. S. C. §1331. In order to provide a neutral forum for what have come to be known as diversity cases, Congress also has granted district courts original jurisdiction in civil actions between citizens of different States, between U. S. citizens and foreign citizens, or by foreign states against U. S. citizens. §1332. To ensure that diversity jurisdiction does not flood the federal courts with minor disputes, §1332(a) requires that the matter in controversy in a diversity case exceed a specified amount, currently $75,000. §1332(a).
Although the district courts may not exercise jurisdiction absent a statutory basis, it is well established—in certain classes of cases—that, once a court has original jurisdiction over some claims in the action, it may exercise supplemental jurisdiction over additional claims that are part of the same case or controversy. The leading modern case for this principle is Mine Workers v. Gibbs,383 U. S. 715 (1966). In Gibbs, the plaintiff alleged the defendant’s conduct violated both federal and state law. The District Court, Gibbs held, had original jurisdiction over the action based on the federal claims. Gibbs confirmed that the District Court had the additional power (though not the obligation) to exercise supplemental jurisdiction over related state claims that arose from the same Article III case or controversy. Id., at 725 (“The federal claim must have substance sufficient to confer subject matter jurisdiction on the court… . [A]ssuming substantiality of the federal issues, there is power in federal courts to hear the whole”).
As we later noted, the decision allowing jurisdiction over pendent state claims in Gibbs did not mention, let alone come to grips with, the text of the jurisdictional statutes and the bedrock principle that federal courts have no jurisdiction without statutory authorization. Finley v. United States,490 U. S. 545, 548 (1989). In Finley, we nonetheless reaffirmed and rationalized Gibbs and its progeny by inferring from it the interpretive principle that, in cases involving supplemental jurisdiction over additional claims between parties properly in federal court, the jurisdictional statutes should be read broadly, on the assumption that in this context Congress intended to authorize courts to exercise their full Article III power to dispose of an “ ‘entire action before the court [which] comprises but one constitutional “case.”’ ” 490 U. S., at 549 (quoting Gibbs, supra, at 725).
We have not, however, applied Gibbs’ expansive interpretive approach to other aspects of the jurisdictional statutes. For instance, we have consistently interpreted §1332 as requiring complete diversity: In a case with multiple plaintiffs and multiple defendants, the presence in the action of a single plaintiff from the same State as a single defendant deprives the district court of original diversity jurisdiction over the entire action. Strawbridge v. Curtiss, 3 Cranch 267 (1806); Owen Equipment & Erection Co. v. Kroger,437 U. S. 365, 375 (1978). The complete diversity requirement is not mandated by the Constitution, State Farm Fire & Casualty Co. v. Tashire,386 U. S. 523, 530–531 (1967), or by the plain text of §1332(a). The Court, nonetheless, has adhered to the complete diversity rule in light of the purpose of the diversity requirement, which is to provide a federal forum for important disputes where state courts might favor, or be perceived as favoring, home-state litigants. The presence of parties from the same State on both sides of a case dispels this concern, eliminating a principal reason for conferring §1332 jurisdiction over any of the claims in the action. See Wisconsin Dept. of Corrections v. Schacht, 524 U. S. 381, 389 (1998); Newman-Green, Inc. v. Alfonzo-Larrain,490 U. S. 826, 829 (1989). The specific purpose of the complete diversity rule explains both why we have not adopted Gibbs’ expansive interpretive approach to this aspect of the jurisdictional statute and why Gibbs does not undermine the complete diversity rule. In order for a federal court to invoke supplemental jurisdiction under Gibbs, it must first have original jurisdiction over at least one claim in the action. Incomplete diversity destroys original jurisdiction with respect to all claims, so there is nothing to which supplemental jurisdiction can adhere.
In contrast to the diversity requirement, most of the other statutory prerequisites for federal jurisdiction, including the federal-question and amount-in-controversy requirements, can be analyzed claim by claim. True, it does not follow by necessity from this that a district court has authority to exercise supplemental jurisdiction over all claims provided there is original jurisdiction over just one. Before the enactment of §1367, the Court declined in contexts other than the pendent-claim instance to follow Gibbs’ expansive approach to interpretation of the jurisdictional statutes. The Court took a more restrictive view of the proper interpretation of these statutes in so-called pendent-party cases involving supplemental jurisdiction over claims involving additional parties—plaintiffs or defendants—where the district courts would lack original jurisdiction over claims by each of the parties standing alone.
Thus, with respect to plaintiff-specific jurisdictional requirements, the Court held in Clark v. Paul Gray, Inc.,306 U. S. 583 (1939), that every plaintiff must separately satisfy the amount-in-controversy requirement. Though Clark was a federal-question case, at that time federal-question jurisdiction had an amount-in-controversy requirement analogous to the amount-in-controversy requirement for diversity cases. “Proper practice,” Clark held, “requires that where each of several plaintiffs is bound to establish the jurisdictional amount with respect to his own claim, the suit should be dismissed as to those who fail to show that the requisite amount is involved.” Id., at 590. The Court reaffirmed this rule, in the context of a class action brought invoking §1332(a) diversity jurisdiction, in Zahn v. International Paper Co.,414 U. S. 291 (1973). It follows “inescapably” from Clark, the Court held in Zahn, that “any plaintiff without the jurisdictional amount must be dismissed from the case, even though others allege jurisdictionally sufficient claims.” 414 U. S., at 300.
The Court took a similar approach with respect to supplemental jurisdiction over claims against additional defendants that fall outside the district courts’ original jurisdiction. In Aldinger v. Howard,427 U. S. 1 (1976), the plaintiff brought a 42 U. S. C. §1983 action against county officials in district court pursuant to the statutory grant of jurisdiction in 28 U. S. C. §1343(3) (1976 ed.). The plaintiff further alleged the court had supplemental jurisdiction over her related state-law claims against the county, even though the county was not suable under §1983 and so was not subject to §1343(3)’s original jurisdiction. The Court held that supplemental jurisdiction could not be exercised because Congress, in enacting §1343(3), had declined (albeit implicitly) to extend federal jurisdiction over any party who could not be sued under the federal civil rights statutes. 427 U. S., at 16–19. “Before it can be concluded that [supplemental] jurisdiction [over additional parties] exists,” Aldinger held, “a federal court must satisfy itself not only that Art[icle] III permits it, but that Congress in the statutes conferring jurisdiction has not expressly or by implication negated its existence.” Id., at 18.
In Finley v. United States,490 U. S. 545 (1989), we confronted a similar issue in a different statutory context. The plaintiff in Finley brought a Federal Tort Claims Act negligence suit against the Federal Aviation Administration in District Court, which had original jurisdiction under §1346(b). The plaintiff tried to add related claims against other defendants, invoking the District Court’s supplemental jurisdiction over so-called pendent parties. We held that the District Court lacked a sufficient statutory basis for exercising supplemental jurisdiction over these claims. Relying primarily on Zahn, Aldinger, and Kroger, we held in Finley that “a grant of jurisdiction over claims involving particular parties does not itself confer jurisdiction over additional claims by or against different parties.” 490 U. S., at 556. While Finley did not “limit or impair” Gibbs’ liberal approach to interpreting the jurisdictional statutes in the context of supplemental jurisdiction over additional claims involving the same parties, 490 U. S., at 556, Finley nevertheless declined to extend that interpretive assumption to claims involving additional parties. Finley held that in the context of parties, in contrast to claims, “we will not assume that the full constitutional power has been congressionally authorized, and will not read jurisdictional statutes broadly.” Id., at 549.
As the jurisdictional statutes existed in 1989, then, here is how matters stood: First, the diversity requirement in §1332(a) required complete diversity; absent complete diversity, the district court lacked original jurisdiction over all of the claims in the action. Strawbridge, 3 Cranch, at 267–268; Kroger, 437 U. S., at 373–374. Second, if the district court had original jurisdiction over at least one claim, the jurisdictional statutes implicitly authorized supplemental jurisdiction over all other claims between the same parties arising out of the same Article III case or controversy. Gibbs, 383 U. S., at 725. Third, even when the district court had original jurisdiction over one or more claims between particular parties, the jurisdictional statutes did not authorize supplemental jurisdiction over additional claims involving other parties. Clark, supra, at 590; Zahn, supra, at 300–301; Finley, supra, at 556.
In Finley we emphasized that “[w]hatever we say regarding the scope of jurisdiction conferred by a particular statute can of course be changed by Congress.” 490 U. S., at 556. In 1990, Congress accepted the invitation. It passed the Judicial Improvements Act, 104 Stat. 5089, which enacted §1367, the provision which controls these cases.
Section 1367 provides, in relevant part:
“(a) Except as provided in subsections (b) and (c) or as expressly provided otherwise by Federal statute, in any civil action of which the district courts have original jurisdiction, the district courts shall have supplemental jurisdiction over all other claims that are so related to claims in the action within such original jurisdiction that they form part of the same case or controversy under Article III of the United States Constitution. Such supplemental jurisdiction shall include claims that involve the joinder or intervention of additional parties.
“(b) In any civil action of which the district courts have original jurisdiction founded solely on section 1332 of this title, the district courts shall not have supplemental jurisdiction under subsection (a) over claims by plaintiffs against persons made parties under Rule 14, 19, 20, or 24 of the Federal Rules of Civil Procedure, or over claims by persons proposed to be joined as plaintiffs under Rule 19 of such rules, or seeking to intervene as plaintiffs under Rule 24 of such rules, when exercising supplemental jurisdiction over such claims would be inconsistent with the jurisdictional requirements of section 1332.”
All parties to this litigation and all courts to consider the question agree that §1367 overturned the result in Finley. There is no warrant, however, for assuming that §1367 did no more than to overrule Finley and otherwise to codify the existing state of the law of supplemental jurisdiction. We must not give jurisdictional statutes a more expansive interpretation than their text warrants, 490 U. S., at 549, 556; but it is just as important not to adopt an artificial construction that is narrower than what the text provides. No sound canon of interpretation requires Congress to speak with extraordinary clarity in order to modify the rules of federal jurisdiction within appropriate constitutional bounds. Ordinary principles of statutory construction apply. In order to determine the scope of supplemental jurisdiction authorized by §1367, then, we must examine the statute’s text in light of context, structure, and related statutory provisions.
Section 1367(a) is a broad grant of supplemental jurisdiction over other claims within the same case or controversy, as long as the action is one in which the district courts would have original jurisdiction. The last sentence of §1367(a) makes it clear that the grant of supplemental jurisdiction extends to claims involving joinder or intervention of additional parties. The single question before us, therefore, is whether a diversity case in which the claims of some plaintiffs satisfy the amount-in-controversy requirement, but the claims of others plaintiffs do not, presents a “civil action of which the district courts have original jurisdiction.” If the answer is yes, §1367(a) confers supplemental jurisdiction over all claims, including those that do not independently satisfy the amount-in-controversy requirement, if the claims are part of the same Article III case or controversy. If the answer is no, §1367(a) is inapplicable and, in light of our holdings in Clark and Zahn, the district court has no statutory basis for exercising supplemental jurisdiction over the additional claims.
We now conclude the answer must be yes. When the well-pleaded complaint contains at least one claim that satisfies the amount-in-controversy requirement, and there are no other relevant jurisdictional defects, the district court, beyond all question, has original jurisdiction over that claim. The presence of other claims in the complaint, over which the district court may lack original jurisdiction, is of no moment. If the court has original jurisdiction over a single claim in the complaint, it has original jurisdiction over a “civil action” within the meaning of §1367(a), even if the civil action over which it has jurisdiction comprises fewer claims than were included in the complaint. Once the court determines it has original jurisdiction over the civil action, it can turn to the question whether it has a constitutional and statutory basis for exercising supplemental jurisdiction over the other claims in the action.
Section 1367(a) commences with the direction that §§1367(b) and (c), or other relevant statutes, may provide specific exceptions, but otherwise §1367(a) is a broad jurisdictional grant, with no distinction drawn between pendent-claim and pendent-party cases. In fact, the last sentence of §1367(a) makes clear that the provision grants supplemental jurisdiction over claims involving joinder or intervention of additional parties. The terms of §1367 do not acknowledge any distinction between pendent jurisdiction and the doctrine of so-called ancillary jurisdiction. Though the doctrines of pendent and ancillary jurisdiction developed separately as a historical matter, the Court has recognized that the doctrines are “two species of the same generic problem,” Kroger, 437 U. S., at 370. Nothing in §1367 indicates a congressional intent to recognize, preserve, or create some meaningful, substantive distinction between the jurisdictional categories we have historically labeled pendent and ancillary.
If §1367(a) were the sum total of the relevant statutory language, our holding would rest on that language alone. The statute, of course, instructs us to examine §1367(b) to determine if any of its exceptions apply, so we proceed to that section. While §1367(b) qualifies the broad rule of §1367(a), it does not withdraw supplemental jurisdiction over the claims of the additional parties at issue here. The specific exceptions to §1367(a) contained in §1367(b), moreover, provide additional support for our conclusion that §1367(a) confers supplemental jurisdiction over these claims. Section 1367(b), which applies only to diversity cases, withholds supplemental jurisdiction over the claims of plaintiffs proposed to be joined as indispensable parties under Federal Rule of Civil Procedure 19, or who seek to intervene pursuant to Rule 24. Nothing in the text of §1367(b), however, withholds supplemental jurisdiction over the claims of plaintiffs permissively joined under Rule 20 (like the additional plaintiffs in No. 04–79) or certified as class-action members pursuant to Rule 23 (like the additional plaintiffs in No. 04–70). The natural, indeed the necessary, inference is that §1367 confers supplemental jurisdiction over claims by Rule 20 and Rule 23 plaintiffs. This inference, at least with respect to Rule 20 plaintiffs, is strengthened by the fact that §1367(b) explicitly excludes supplemental jurisdiction over claims against defendants joined under Rule 20.
We cannot accept the view, urged by some of the parties, commentators, and Courts of Appeals, that a district court lacks original jurisdiction over a civil action unless the court has original jurisdiction over every claim in the complaint. As we understand this position, it requires assuming either that all claims in the complaint must stand or fall as a single, indivisible “civil action” as a matter of definitional necessity—what we will refer to as the “indivisibility theory”—or else that the inclusion of a claim or party falling outside the district court’s original jurisdiction somehow contaminates every other claim in the complaint, depriving the court of original jurisdiction over any of these claims—what we will refer to as the “contamination theory.”
The indivisibility theory is easily dismissed, as it is inconsistent with the whole notion of supplemental jurisdiction. If a district court must have original jurisdiction over every claim in the complaint in order to have “original jurisdiction” over a “civil action,” then in Gibbs there was no civil action of which the district court could assume original jurisdiction under §1331, and so no basis for exercising supplemental jurisdiction over any of the claims. The indivisibility theory is further belied by our practice—in both federal-question and diversity cases—of allowing federal courts to cure jurisdictional defects by dismissing the offending parties rather than dismissing the entire action. Clark, for example, makes clear that claims that are jurisdictionally defective as to amount in controversy do not destroy original jurisdiction over other claims. 306 U. S., at 590 (dismissing parties who failed to meet the amount-in-controversy requirement but retaining jurisdiction over the remaining party). If the presence of jurisdictionally problematic claims in the complaint meant the district court was without original jurisdiction over the single, indivisible civil action before it, then the district court would have to dismiss the whole action rather than particular parties.
We also find it unconvincing to say that the definitional indivisibility theory applies in the context of diversity cases but not in the context of federal-question cases. The broad and general language of the statute does not permit this result. The contention is premised on the notion that the phrase “original jurisdiction of all civil actions” means different things in §1331 and §1332. It is implausible, however, to say that the identical phrase means one thing (original jurisdiction in all actions where at least one claim in the complaint meets the following requirements) in §1331 and something else (original jurisdiction in all actions where every claim in the complaint meets the following requirements) in §1332.
The contamination theory, as we have noted, can make some sense in the special context of the complete diversity requirement because the presence of nondiverse parties on both sides of a lawsuit eliminates the justification for providing a federal forum. The theory, however, makes little sense with respect to the amount-in-controversy requirement, which is meant to ensure that a dispute is sufficiently important to warrant federal-court attention. The presence of a single nondiverse party may eliminate the fear of bias with respect to all claims, but the presence of a claim that falls short of the minimum amount in controversy does nothing to reduce the importance of the claims that do meet this requirement.
It is fallacious to suppose, simply from the proposition that §1332 imposes both the diversity requirement andthe amount-in-controversy requirement, that the contamination theory germane to the former is also relevant to the latter. There is no inherent logical connection between the amount-in-controversy requirement and §1332 diversity jurisdiction. After all, federal-question jurisdiction once had an amount-in-controversy requirement as well. If such a requirement were revived under §1331, it is clear beyond peradventure that §1367(a) provides supplemental jurisdiction over federal-question cases where some, but not all, of the federal-law claims involve a sufficient amount in controversy. In other words, §1367(a) unambiguously overrules the holding and the result in Clark. If that is so, however, it would be quite extraordinary to say that §1367 did not also overrule Zahn, a case that was premised in substantial part on the holding in Clark.
In addition to the theoretical difficulties with the argument that a district court has original jurisdiction over a civil action only if it has original jurisdiction over each individual claim in the complaint, we have already considered and rejected a virtually identical argument in the closely analogous context of removal jurisdiction. In Chicago v. International College of Surgeons,522 U. S. 156 (1997), the plaintiff brought federal- and state-law claims in state court. The defendant removed to federal court. The plaintiff objected to removal, citing the text of the removal statute, §1441(a). That statutory provision, which bears a striking similarity to the relevant portion of §1367, authorizes removal of “any civil action … of which the district courts of the United States have original jurisdiction … .” The College of Surgeons plaintiff urged that, because its state-law claims were not within the District Court’s original jurisdiction, §1441(a) did not authorize removal. We disagreed. The federal law claims, we held, “suffice to make the actions ‘civil actions’ within the ‘original jurisdiction’ of the district courts … . Nothing in the jurisdictional statutes suggests that the presence of related state law claims somehow alters the fact that [the plaintiff’s] complaints, by virtue of their federal claims, were ‘civil actions’ within the federal courts’ ‘original jurisdiction.’ ” Id., at 166. Once the case was removed, the District Court had original jurisdiction over the federal law claims and supplemental jurisdiction under §1367(a) over the state-law claims. Id., at 165.
The dissent in College of Surgeons argued that because the plaintiff sought on-the-record review of a local administrative agency decision, the review it sought was outside the scope of the District Court’s jurisdiction. Id., at 177 (opinion of Ginsburg, J.). We rejected both the suggestion that state-law claims involving administrative appeals are beyond the scope of §1367 supplemental jurisdiction, id., at 168–172 (opinion of the Court), and the claim that the administrative review posture of the case deprived the District Court of original jurisdiction over the federal-law claims in the case, id., at 163–168. More importantly for present purposes, College of Surgeons stressed that a district court has original jurisdiction of a civil action for purposes of §1441(a) as long as it has original jurisdiction over a subset of the claims constituting the action. Even the College of Surgeons dissent, which took issue with the Court’s interpretation of §1367, did not appear to contest this view of §1441(a).
Although College of Surgeons involved additional claims between the same parties, its interpretation of §1441(a) applies equally to cases involving additional parties whose claims fall short of the jurisdictional amount. If we were to adopt the contrary view that the presence of additional parties means there is no “civil action … of which the district courts … have original jurisdiction,” those cases simply would not be removable. To our knowledge, no court has issued a reasoned opinion adopting this view of the removal statute. It is settled, of course, that absent complete diversity a case is not removable because the district court would lack original jurisdiction. Caterpillar Inc. v. Lewis,519 U. S. 61, 73 (1996). This, however, is altogether consistent with our view of §1441(a). A failure of complete diversity, unlike the failure of some claims to meet the requisite amount in controversy, contaminates every claim in the action.
We also reject the argument, similar to the attempted distinction of College of Surgeons discussed above, that while the presence of additional claims over which the district court lacks jurisdiction does not mean the civil action is outside the purview of §1367(a), the presence of additional parties does. The basis for this distinction is not altogether clear, and it is in considerable tension with statutory text. Section 1367(a) applies by its terms to any civil action of which the district courts have original jurisdiction, and the last sentence of §1367(a) expressly contemplates that the court may have supplemental jurisdiction over additional parties. So it cannot be the case that the presence of those parties destroys the court’s original jurisdiction, within the meaning of §1367(a), over a civil action otherwise properly before it. Also, §1367(b) expressly withholds supplemental jurisdiction in diversity cases over claims by plaintiffs joined as indispensable parties under Rule 19. If joinder of such parties were sufficient to deprive the district court of original jurisdiction over the civil action within the meaning of §1367(a), this specific limitation on supplemental jurisdiction in §1367(b) would be superfluous. The argument that the presence of additional parties removes the civil action from the scope of §1367(a) also would mean that §1367 left the Finley result undisturbed. Finley, after all, involved a Federal Tort Claims Act suit against a federal defendant and state-law claims against additional defendants not otherwise subject to federal jurisdiction. Yet all concede that one purpose of §1367 was to change the result reached in Finley.
Finally, it is suggested that our interpretation of §1367(a) creates an anomaly regarding the exceptions listed in §1367(b): It is not immediately obvious why Congress would withhold supplemental jurisdiction over plaintiffs joined as parties “needed for just adjudication” under Rule 19 but would allow supplemental jurisdiction over plaintiffs permissively joined under Rule 20. The omission of Rule 20 plaintiffs from the list of exceptions in §1367(b) may have been an “unintentional drafting gap,” Meritcare, 166 F. 3d, at 221 and n. 6. If that is the case, it is up to Congress rather than the courts to fix it. The omission may seem odd, but it is not absurd. An alternative explanation for the different treatment of Rule 19 and Rule 20 is that Congress was concerned that extending supplemental jurisdiction to Rule 19 plaintiffs would allow circumvention of the complete diversity rule: A nondiverse plaintiff might be omitted intentionally from the original action, but joined later under Rule 19 as a necessary party. See Stromberg Metal Works, 77 F. 3d, at 932. The contamination theory described above, if applicable, means this ruse would fail, but Congress may have wanted to make assurance double sure. More generally, Congress may have concluded that federal jurisdiction is only appropriate if the district court would have original jurisdiction over the claims of all those plaintiffs who are so essential to the action that they could be joined under Rule 19.
To the extent that the omission of Rule 20 plaintiffs from the list of §1367(b) exceptions is anomalous, moreover, it is no more anomalous than the inclusion of Rule 19 plaintiffs in that list would be if the alternative view of §1367(a) were to prevail. If the district court lacks original jurisdiction over a civil diversity action where any plaintiff’s claims fail to comply with all the requirements of §1332, there is no need for a special §1367(b) exception for Rule 19 plaintiffs who do not meet these requirements. Though the omission of Rule 20 plaintiffs from §1367(b) presents something of a puzzle on our view of the statute, the inclusion of Rule 19 plaintiffs in this section is at least as difficult to explain under the alternative view.
And so we circle back to the original question. When the well-pleaded complaint in district court includes multiple claims, all part of the same case or controversy, and some, but not all, of the claims are within the court’s original jurisdiction, does the court have before it “any civil action of which the district courts have original jurisdiction”? It does. Under §1367, the court has original jurisdiction over the civil action comprising the claims for which there is no jurisdictional defect. No other reading of §1367 is plausible in light of the text and structure of the jurisdictional statute. Though the special nature and purpose of the diversity requirement mean that a single nondiverse party can contaminate every other claim in the lawsuit, the contamination does not occur with respect to jurisdictional defects that go only to the substantive importance of individual claims.
It follows from this conclusion that the threshold requirement of §1367(a) is satisfied in cases, like those now before us, where some, but not all, of the plaintiffs in a diversity action allege a sufficient amount in controversy. We hold that §1367 by its plain text overruled Clark and Zahn and authorized supplemental jurisdiction over all claims by diverse parties arising out of the same Article III case or controversy, subject only to enumerated exceptions not applicable in the cases now before us.
The proponents of the alternative view of §1367 insist that the statute is at least ambiguous and that we should look to other interpretive tools, including the legislative history of §1367, which supposedly demonstrate Congress did not intend §1367 to overrule Zahn. We can reject this argument at the very outset simply because §1367 is not ambiguous. For the reasons elaborated above, interpreting §1367 to foreclose supplemental jurisdiction over plaintiffs in diversity cases who do not meet the minimum amount in controversy is inconsistent with the text, read in light of other statutory provisions and our established jurisprudence. Even if we were to stipulate, however, that the reading these proponents urge upon us is textually plausible, the legislative history cited to support it would not alter our view as to the best interpretation of §1367.
Those who urge that the legislative history refutes our interpretation rely primarily on the House Judiciary Committee Report on the Judicial Improvements Act. H. R. Rep. No. 101–734 (1990) (House Report or Report). This Report explained that §1367 would “authorize jurisdiction in a case like Finley, as well as essentially restore the pre-Finley understandings of the authorization for and limits on other forms of supplemental jurisdiction.” House Report, at 28. The Report stated that §1367(a) “generally authorizes the district court to exercise jurisdiction over a supplemental claim whenever it forms part of the same constitutional case or controversy as the claim or claims that provide the basis of the district court’s original jurisdiction,” and in so doing codifies Gibbs and fills the statutory gap recognized in Finley. House Report, at 28–29, and n. 15. The Report then remarked that §1367(b) “is not intended to affect the jurisdictional requirements of [§1332] in diversity-only class actions, as those requirements were interpreted prior to Finley,” citing, without further elaboration, Zahn and Supreme Tribe of Ben-Hur v. Cauble,255 U. S. 356 (1921). House Report, at 29, and n. 17. The Report noted that the “net effect” of §1367(b) was to implement the “principal rationale” of Kroger, House Report, at 29, and n. 16, effecting only “one small change” in pre-Finley practice with respect to diversity actions: §1367(b) would exclude “Rule 23(a) plaintiff-intervenors to the same extent as those sought to be joined as plaintiffs under Rule 19.” House Report, at 29. (It is evident that the report here meant to refer to Rule 24, not Rule 23.)
As we have repeatedly held, the authoritative statement is the statutory text, not the legislative history or any other extrinsic material. Extrinsic materials have a role in statutory interpretation only to the extent they shed a reliable light on the enacting Legislature’s understanding of otherwise ambiguous terms. Not all extrinsic materials are reliable sources of insight into legislative understandings, however, and legislative history in particular is vulnerable to two serious criticisms. First, legislative history is itself often murky, ambiguous, and contradictory. Judicial investigation of legislative history has a tendency to become, to borrow Judge Leventhal’s memorable phrase, an exercise in “ ‘looking over a crowd and picking out your friends.’ ” SeeWald, Some Observations on the Use of Legislative History in the 1981 Supreme Court Term, 68 Iowa L. Rev. 195, 214 (1983). Second, judicial reliance on legislative materials like committee reports, which are not themselves subject to the requirements of Article I, may give unrepresentative committee members—or, worse yet, unelected staffers and lobbyists—both the power and the incentive to attempt strategic manipulations of legislative history to secure results they were unable to achieve through the statutory text. We need not comment here on whether these problems are sufficiently prevalent to render legislative history inherently unreliable in all circumstances, a point on which Members of this Court have disagreed. It is clear, however, that in this instance both criticisms are right on the mark.
First of all, the legislative history of §1367 is far murkier than selective quotation from the House Report would suggest. The text of §1367 is based substantially on a draft proposal contained in a Federal Court Study Committee working paper, which was drafted by a Subcommittee chaired by Judge Posner. Report of the Subcommittee on the Role of the Federal Courts and Their Relationship to the States 567–568 (Mar. 12, 1990), reprinted in Judicial Conference of the United States, 1 Federal Courts Study Committee, Working Papers and Subcommittee Reports (July 1, 1990). See also Judicial Conference of the United States, Report of the Federal Courts Study Committee 47–48 (Apr. 2, 1990) (Study Committee Report) (echoing, in brief summary form, the Subcommittee Working Paper proposal and noting that the Subcommittee Working Paper “contains additional material on this subject”); House Report, at 27 (“[Section 1367] implements a recommendation of the Federal Courts Study Committee found on pages 47 and 48 of its report”). While the Subcommittee explained, in language echoed by the House Report, that its proposal “basically restores the law as it existed prior to Finley,” Subcommittee Working Paper, at 561, it observed in a footnote that its proposal would overrule Zahn and that this would be a good idea, Subcommittee Working Paper, at 561, n. 33. Although the Federal Courts Study Committee did not expressly adopt the Subcommittee’s specific reference to Zahn, it neither explicitly disagreed with the Subcommittee’s conclusion that this was the best reading of the proposed text nor substantially modified the proposal to avoid this result. Study Committee Report, at 47–48. Therefore, even if the House Report could fairly be read to reflect an understanding that the text of §1367 did not overrule Zahn, the Subcommittee Working Paper on which §1367 was based reflected the opposite understanding. The House Report is no more authoritative than the Subcommittee Working Paper. The utility of either can extend no further than the light it sheds on how the enacting Legislature understood the statutory text. Trying to figure out how to square the Subcommittee Working Paper’s understanding with the House Report’s understanding, or which is more reflective of the understanding of the enacting legislators, is a hopeless task.
Second, the worst fears of critics who argue legislative history will be used to circumvent the Article I process were realized in this case. The telltale evidence is the statement, by three law professors who participated in drafting §1367, see House Report, at 27, n. 13, that §1367 “on its face” permits “supplemental jurisdiction over claims of class members that do not satisfy section 1332’s jurisdictional amount requirement, which would overrule [Zahn]. [There is] a disclaimer of intent to accomplish this result in the legislative history… . It would have been better had the statute dealt explicitly with this problem, and the legislative history was an attempt to correct the oversight.” Rowe, Burbank, & Mengler, Compounding or Creating Confusion About Supplemental Jurisdiction? A Reply to Professor Freer, 40 Emory L. J. 943, 960, n. 90 (1991). The professors were frank to concede that if one refuses to consider the legislative history, one has no choice but to “conclude that section 1367 has wiped Zahn off the books.” Ibid. So there exists an acknowledgment, by parties who have detailed, specific knowledge of the statute and the drafting process, both that the plain text of §1367 overruled Zahn and that language to the contrary in the House Report was a post hoc attempt to alter that result. One need not subscribe to the wholesale condemnation of legislative history to refuse to give any effect to such a deliberate effort to amend a statute through a committee report.
In sum, even if we believed resort to legislative history were appropriate in these cases—a point we do not concede—we would not give significant weight to the House Report. The distinguished jurists who drafted the Subcommittee Working Paper, along with three of the participants in the drafting of §1367, agree that this provision, on its face, overrules Zahn. This accords with the best reading of the statute’s text, and nothing in the legislative history indicates directly and explicitly that Congress understood the phrase “civil action of which the district courts have original jurisdiction” to exclude cases in which some but not all of the diversity plaintiffs meet the amount in controversy requirement.
No credence, moreover, can be given to the claim that, if Congress understood §1367 to overrule Zahn, the proposal would have been more controversial. We have little sense whether any Member of Congress would have been particularly upset by this result. This is not a case where one can plausibly say that concerned legislators might not have realized the possible effect of the text they were adopting. Certainly, any competent legislative aide who studied the matter would have flagged this issue if it were a matter of importance to his or her boss, especially in light of the Subcommittee Working Paper. There are any number of reasons why legislators did not spend more time arguing over §1367, none of which are relevant to our interpretation of what the words of the statute mean.
Finally, we note that the Class Action Fairness Act (CAFA), Pub. L. 109–2, 119 Stat. 4, enacted this year, has no bearing on our analysis of these cases. Subject to certain limitations, the CAFA confers federal diversity jurisdiction over class actions where the aggregate amount in controversy exceeds $5 million. It abrogates the rule against aggregating claims, a rule this Court recognized in Ben-Hur and reaffirmed in Zahn. The CAFA, however, is not retroactive, and the views of the 2005 Congress are not relevant to our interpretation of a text enacted by Congress in 1990. The CAFA, moreover, does not moot the significance of our interpretation of §1367, as many proposed exercises of supplemental jurisdiction, even in the class-action context, might not fall within the CAFA’s ambit. The CAFA, then, has no impact, one way or the other, on our interpretation of §1367.
The judgment of the Court of Appeals for the Eleventh Circuit is affirmed. The judgment of the Court of Appeals for the First Circuit is reversed, and the case is remanded for proceedings consistent with this opinion.
It is so ordered.
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