Whether, in a diversity action, a plaintiff may assert a state-law claim against a nondiverse third-party defendant without an independent basis of federal jurisdiction.
Holding
No. A federal court lacks jurisdiction over a plaintiff’s claim against a third-party defendant who is a citizen of the same State as the plaintiff when diversity is the sole asserted basis of original jurisdiction.
Reasoning
Federal Rule of Civil Procedure 14(a) permits a plaintiff to state a claim against a third-party defendant arising out of the relevant transaction or occurrence, but the Rule does not itself confer subject-matter jurisdiction. The Federal Rules cannot create or withdraw the jurisdiction that Congress has authorized.
The Court distinguished the constitutional scope of federal judicial power from the jurisdiction Congress actually granted. Mine Workers v. Gibbs held that federal courts may have constitutional power over related claims sharing a common nucleus of operative fact. But Gibbs did not establish that every claim within that constitutional boundary is authorized by a jurisdictional statute. The Court assumed, without deciding, that Article III could permit jurisdiction here, then examined the statutory limits on diversity jurisdiction.
Section 1332 requires complete diversity: every plaintiff must be diverse from every defendant. Kroger and Owen were both Iowa citizens. Kroger therefore could not have filed her original federal complaint against both OPPD and Owen, because the presence of Owen would have defeated complete diversity from the outset.
Kroger’s direct claim against Owen was not ancillary in the relevant sense. OPPD’s impleader claim against Owen was logically dependent on the original action because OPPD sought contribution or indemnity for liability it might owe Kroger. By contrast, Kroger’s claim against Owen was a separate and independent claim: Owen’s liability to Kroger did not depend on whether OPPD was liable.
The identity of the claimant also mattered. Ancillary jurisdiction traditionally accommodates claims by parties brought into federal court involuntarily, or parties whose rights could be lost unless they asserted them in the pending action. Kroger voluntarily selected a federal forum for her state-law claim and could pursue her claim against Owen in state court; she therefore had to accept the limits of the federal diversity statute.
Allowing Kroger’s claim would permit plaintiffs to evade complete diversity by initially suing only diverse defendants and then waiting for those defendants to implead nondiverse parties. Convenience and judicial economy cannot override Congress’s deliberate requirement of complete diversity.