## Facts

- A municipal improvement board in Texarkana, Arkansas contracted with a Missouri paving company to perform street paving work, secured by a performance bond with sureties.
- The company filed a diversity action in federal district court alleging breach of the paving contract and seeking damages; a jury trial ended in a mistrial with no judgment.
- The board later filed a state chancery suit in equity against the company and its sureties, alleging contract abandonment and seeking an accounting and a money judgment.
- In each forum, the defendant filed responsive pleadings asserting substantially the same claims and defenses as those asserted by the opposing party in the other forum.
- The state equity suit was removed to federal court and then remanded to state court, where it remained pending.
- The company then sought a federal injunction to stop further prosecution of the state suit; the district court denied relief, and the court of appeals ordered an injunction.

## Issues

1. Whether a federal court that first obtained jurisdiction over a diversity contract action may enjoin a later-filed parallel state action on the same contract when both proceedings are in personam and seek only money judgments.
2. Whether access to federal court based on diversity jurisdiction constitutes a constitutional right that can justify enjoining parallel state-court litigation.

## Decision

- The Supreme Court reversed the court of appeals and held that the federal court could not enjoin the state proceedings.
- Because both actions were in personam and sought only money judgments, each court could proceed independently to judgment.
- The possibility that one judgment might have claim-preclusive effect in the other forum did not amount to an impairment of jurisdiction warranting an injunction.
- The right to sue in federal court based on diversity is statutory, not constitutional, and does not support federal injunctive interference with a concurrent state action.

## Legal Principles

- When a court first takes jurisdiction over specific property (in rem or quasi in rem), it may restrain parallel proceedings to protect its control over the res.
- When concurrent proceedings are purely in personam and seek only personal money judgments, jurisdiction in one court does not exclude or defeat jurisdiction in the other, and an injunction is improper.
- Res judicata consequences arising from the first final judgment concern the merits and preclusion, not the second court’s jurisdiction.
- Diversity jurisdiction is conferred by statute and does not create a constitutional entitlement to exclusive federal adjudication that permits enjoining state-court suits.

## Conclusion

Parallel state and federal in personam actions seeking money judgments may proceed at the same time, and the first-filed federal diversity action does not authorize a federal injunction against the later state suit absent a need to protect control over a specific res or other narrow authorization.


Kline v. Burke Constr. Co., 260 U.S. 226 (1922)