Louisiana Revised Statutes Tit. 49, § 2. Sovereignty over waters within boundaries

A. Subject to the right of the government of the United States to regulate foreign and interstate commerce under Section 8 of Article 1 of the Constitution of the United States, and to the power of the government of the United States over cases of admiralty and maritime jurisdiction under Section 2 of Article 3 of the Constitution of the United States, and the powers of the United States Coast Guard as provided by law to patrol and protect the navigable waters of the United States in the Gulf of America, the state of Louisiana has full sovereignty over all of the waters of the Gulf of America and of the arms of the Gulf of America within the boundaries of Louisiana, and over the beds and shores of the Gulf and all arms of the Gulf within the boundaries of Louisiana.

B. The state of Louisiana shall be entitled to all the lands, minerals and other natural resources underlying the Gulf of America, extending seaward from its coastline for a distance of three marine leagues.