Parties sometimes go to great lengths to get their case into, and then to keep it in, federal court. In this ease, a corporation and its subsidiary sued numerous insurers in federal court, based on diversity jurisdiction, seeking coverage for environmental claims. On the same day, they sued another insurer in state court on the same theory and for the same relief. That other insurer was an instate defendant and its inclusion in the federal action would have .destroyed diversity. The defendants in the federal case asked the district court to dismiss the federal case on the ground that under Fed.R.Civ.P. 19, the in-state insurer was a necessary and indispensable party. The district court did so.
The plaintiffs appeal this decision. To complicate matters, when plaintiffs’ counsel filed the jurisdictional statement in this court, they determined for the first time that one of their clients, Webster Electric, was not incorporated in Wisconsin as they had pleaded, but in Delaware, the same state as one of the defendants. Faced with this violation of the complete diversity requirement, plaintiffs moved this court to drop Webster as a plaintiff, or in the alternative to drop the defendant insurer with which Webster was not diverse. Because this case never belonged in federal court, we affirm the district court’s dismissal on the ground it lacked subject matter jurisdiction. The issues may be resolved in a more comprehensive parallel action pending in Wisconsin state court.
I.
Sta-Rite Industries, Inc. and its wholly-owned subsidiary Webster Electric Co., Inc., filed this declaratory judgment action against various insurance companies that had issued them general commercial liability policies between 1971 and 1987. Plaintiffs sought a declaration that the named insurance companies should defend and indemnify them for any damages allegedly caused by environ
In their federal suit, plaintiffs purposely did not name Employers Insurance of Wau-sau (“Wausau”), which had provided them primary and excess insurance coverage from 1956 through 1971. Wausau is incorporated in Wisconsin and'has its principal place of business in Wausau, Wisconsin. To name Wausau as a defendant in the federal case would destroy the complete diversity requirement of § 1332(a) as interpreted. See Stromberg Metal Works, Inc. v. Press Mechanical, Inc.,
The insurers moved to dismiss this federal case pursuant to Fed.R.Civ.P. 12(b)(7) for failure to name Wausau, which they deemed a necessary and indispensable party to the action under Rule 19. The district court agreed. It found Wausau to be necessary within the meaning of Rule 19(a) and indispensable under Rule 19(b) because, to the prejudice of Wausau and the other insurers, the possibility of inconsistent rulings, incomplete relief, and duplicative litigation existed unless Wausau was joined.
This case presents more than a straightforward appeal of that decision, however. Plaintiffs’ difficulty with complete diversity among the parties extended beyond their decision to file the separate state suit against the in-state defendant. Upon filing its jurisdictional statement with this court under Circuit Rule 3(c), plaintiffs’ counsel realized for the first time that one of its clients, Webster, Sta-Rite’s wholly-owned subsidiary, is not, as they assumed, incorporated in Wisconsin. Rather, Webster is incorporated in Delaware, as is Prudential Reinsurance, one of the defendant insurers. Faced with a second instance of incomplete diversity, plaintiffs’ counsel moved this court either to drop Webster as an unnecessary party pursuant to Fed.R.Civ.P. 21 and 28 U.S.C. § 1653,
II.
The district court reached the merits of the named insurers’ motion and ruled that Wausau was a necessary and indispensable party to this suit.
Plaintiffs gamble and lose by relying so heavily on this Wisconsin statute. Unlafes the decisionmaker can review the “other insurance” clauses in the Wausau policies, there can be no determination whether any “other insurance” clauses contained in the policies at issue are inconsistent with any “other insurance” clauses in the Wausau policies. If the clauses are in fact consistent, § 631.43(1) would not apply, no joint and several liability would exist, and Wausau must be a party to the suit to fully and accurately allocate liability. Further, the “trigger” issue of which policies provide coverage must be resolved to determine which insurers (if any) are subject to liability, joint and several or not. Section 631.43(1) does not resolve this question, and thus does not resolve the practical prejudice to all insurers which the district court identified:
If applicable, the provision would leave conflict unaffected in instances where one insurer was found to have no coverage. Second, it would not avoid the potential conflict relating to exhaustion of primary coverage. Finally, even if applied, the prejudice of requiring a separate and independent action involving potentially con-flieting trigger theories from two courts would remain.
(Dist. Ct. Decision at 6.)
Plaintiffs also contend that this suit can go forward without Wausau and, if one of the named defendants pleases, it can always bring the instate defendant into the case. Of course, the law does not allow parties to manipulate pleadings to circumvent the rules in such a manner. Under the supplementary jurisdiction statute, if federal jurisdiction is predicated solely on diversity, a district court cannot have supplemental jurisdiction over claims by plaintiffs against persons made parties under Rule 19 “when exercising supplemental jurisdiction over such claims would be inconsistent with the jurisdictional requirements of section 1332.” See 28 U.S.C. § 1367(b). “[A] plaintiff is not allowed to do in two steps what under Strawbridge would lead to dismissal if he did it in one by naming both defendants in his original complaint.” Fidelity and Deposit Co. of Maryland v. Sheboygan Falls,
The district court correctly resolved the Rule 19 question. This case involves issues of first impression under Wisconsin insurance law in the environmental context, including which policies (if any) are implicated by plaintiffs’ claims, exhaustion of primary coverage before excess coverage is implicated, and allocation of defense and indemnity liability among insurers in the injury scenario plaintiffs have pleaded. To resolve these issues without Wausau, the issuer of 15 years of primary and excess coverage, would prejudice all the insurers, including Wausau. A judgment rendered in Wausau’s absence would require duplicative litigation, and result in prejudice both to Wausau and the other insurers. Nor could full and complete
When the district court issued its decision, however, it did not yet know that for two reasons — one jurisdictional, the second rooted in Supreme Court precedent — it need not reach the merits of plaintiffs’ appeal.
First, the district court lacked subject matter jurisdiction over this case. Plaintiff Webster and defendant Prudential Reinsurance share Delaware citizenship. This violates the complete diversity requirement of Strawbridge v. Curtiss and its progeny. Realizing that this jurisdictional defect is of their own making, plaintiffs ask us, in addition to reversing the district court’s dismissal order, to drop either Prudential Reinsurance or Webster to ensure the named parties are completely diverse. In support of their request, plaintiffs cite Newman-Green, Inc. v. Alfonzo-Larrain,
Plaintiffs request that we allow contortion of the pleadings to maintain federal jurisdiction. This would be neither just nor efficient. For the same reasons given by the district court for why Wausau is a necessary and indispensable party, Prudential Reinsurance also meets the dictates of Rule 19 and must be included as a party. See Hansen v. Peoples Bank of Bloomington,
Prudential Reinsurance is also indispensable under Rule 19. The relief possible may change based upon the party defendants. Notably, the ongoing state action in which all the parties and issues are before one court demonstrates that an adequate (indeed, likely better) remedy is available in another venue. See, e.g., Schlumberger Indus., Inc. v. National Sur. Corp.,
Beyond the necessity under Rule 19 to include Prudential Reinsurance as a defendant, Webster meets the requirements of a real party in interest under Fed.R.Civ.P. 17 and thus must be retained as a plaintiff. See Illinois v. Life of Mid-America Ins. Co.,
Newmanr-Green, the authority plaintiffs rely upon in seeking the dismissal of Webster or Prudential Reinsurance, presented vastly different factual and procedural circumstances from those here. In that ease, several years of discovery and pre-trial motions were followed by partial grants of summary judgment,
Webster and Prudential Reinsurance are “real and substantial parties to the controversy” in this case. Navarro Sav. Ass’n v. Lee,
This case will not proceed in federal court for another reason. The Supreme Court has determined that federal courts have discretion whether to accept jurisdiction over a declaratory judgment action if a parallel state court proceeding is pending. Wilton v. Seven Falls Co., - U.S. -, -,
III.
“[Djiversity jurisdiction must be proved by the plaintiff rather than assumed as a default.” Moore,
Plaintiffs’ motion to drop Webster or Prudential Reinsurance is denied. The district court’s judgment is affirmed on the alternative ground of lack of subject matter jurisdiction. Costs are to be taxed against the plaintiffs.
AFFIRMED.
Notes
. “[A] corporation's] ... citizenship for diversity purposes is determined by its place of incorporation and its principal place of business.” Moore v. General Motors Pension Plans, et al.,
. Plaintiffs dismissed their state case against Wausau considering the insurers' more comprehensive suit.
. "Defective allegations of jurisdiction may be amended, upon terms, in the trial or appellate courts.”
. "We need not tty to resolve the question of the proper standard of appellate review" of a Rule 19 determination because abuse of discretion and de novo review yield the same result in this case. See, e.g., Sokaogon Chippewa Community v. Wisconsin, 879 F.2d 300, 303-04 (7th Cir.1989) (appellate review of Rule 19(b) determination "under any standard”).
. Section 631.43(1) provides in pertinent part:
When 2 or more policies promise to indemnify an insured against the same loss ... The policies may by their terms define the extent to which each is primary and each is excess, but*285 if the policies contain inconsistent terms on that point, the insurers shall be jointly and severally liable to the insured on any coverage where the terms are inconsistent, each to the full amount of the coverage it provided....
