United States, when used in the geographical sense, includes the several states, the Commonwealth of Puerto Rico, the insular possessions of the United States, the District of Columbia, the Commonwealth of the Northern Mariana Islands, any territory or possession of the United States, and any territory or possession over which the United States exercises any powers of administration, legislation, and jurisdiction; including offshore areas within their jurisdiction pursuant to section 3 of the Submerged Lands Act (43 U. S. C. 1311), and all territories, dependencies, and possessions of the United States, including foreign trade zones, and also including the outer continental shelf, as defined in section 2(a) of the Outer Continental Shelf Lands Act.