Chevron USA Incorporated, et al., Petitioners v. Plaquemines Parish, Louisiana, et al.

Louisiana parishes sued oil companies in state court over alleged environmental harm from oil and gas operations. The Supreme Court said Chevron's World War II crude-oil production was "for or relating to" its wartime federal contracts, supporting removal to federal court under the federal officer removal law.

The Court said Chevron's World War II crude-oil production was "for or relating to" its wartime federal contracts under the federal officer removal law, but the prompt does not provide the vote count or opinion lineup.

Majority

Thomas

Roberts

Sotomayor

Kagan

Kavanaugh

Gorsuch

Barrett

Jackson

The decision makes it easier for some companies tied to federal wartime contracts to argue that similar state-law suits belong in federal court instead. That matters for Louisiana parishes, oil companies, and other parties fighting over where long-running environmental cases will be heard.

The case now returns to lower courts to apply the Supreme Court's rule and decide how these parish suits proceed. Parties in similar cases will likely use this decision when arguing over federal versus state court.

The fight was over forum, meaning which court should hear the case. Chevron said its World War II oil production was tied to federal wartime contracts.

The decision helps some oil companies argue for federal court in environmental damage suits. That can shape procedure, pace, and legal strategy.

Lower courts must apply the Supreme Court's reading of the federal officer removal law. Then they decide how these parish lawsuits move forward.