United States v. Louisiana

Background

The United States, acting through the Attorney General and Solicitor General, sued the State of Louisiana to assert ownership or paramount federal rights in the lands and minerals under the Gulf of Mexico off Louisiana’s coast, described as extending seaward twenty-seven marine miles. Louisiana had made leases for oil and gas, and received bonuses, rent, and royalties. The federal complaint asked for a declaration of rights, an injunction stopping Louisiana and its lessees from continuing to use the area, and an accounting of money taken since June 23, 1947. Louisiana denied fee simple title, argued there was no actual controversy because Congress had not enacted a law asserting federal authority, and sought a jury trial.

Reasoning

The central question was whether a State may deny the United States’ asserted paramount authority over the offshore area. The Court relied on its prior decision in United States v. California and concluded that the marginal sea (the three-mile belt) and the ocean beyond are matters of national concern tied to commerce, national defense, and foreign relations. Those national interests make federal authority paramount in the area at issue. The Court found no historical or legal basis to place Louisiana on stronger footing than California and held that the United States was entitled to the relief it sought. The Court also denied Louisiana’s motion for a jury trial, describing the suit as an equity action for injunction and accounting.

Real world impact

The ruling prevents Louisiana from continuing to assert these competing lease rights against the United States and requires the State to account for money derived from the area. The Court did not decide broader questions about a State’s power to change its external boundaries as against private parties; it limited its holding to the United States’ paramount rights. The parties were given time to submit the form of decree to implement the judgment.