In the U.S. federal system, individual states exercise ownership (subject to federal law) up to 3 nautical miles (9 nautical miles for Texas and Florida) from shore, while the federal government exercises sole territorial jurisdiction further out (see Tidelands).
UU., os estado da unión exercen a xurisdición (suxeita á lei federal) ata tres millas náuticas (9 millas náuticas para Texas e Florida) desde a costa, mentres que o goberno federal exerce a exclusiva competencia territorial (ver Tidelands).