An alien is deemed to be employed in the United States for purposes of section 274A of the Immigration and Nationality Act (8 U.S.C. 1324a) if the alien is an unlicensed individual employed on a fishing, fish processing, or fish tender vessel that - (1) is a vessel of the United States engaged in the fisheries in the navigable waters of the United States or the exclusive economic zone; and (2) is not engaged in fishing exclusively for highly migratory species (as that term is defined in section 3 of the Magnuson-Stevens Fishery Conservation and Management Act (16 U.S.C. 1802).