External Boundary of the United States Law and Legal Definition

According to 8 CFR 287.1 [Title 8 Aliens and Nationality; Chapter I Department Of Homeland Security (Immigration and Naturalization); Subchapter B Immigration Regulations; Part 287 Field Officers; Powers and Duties], external boundary of the United States means the land boundaries and the territorial sea of the United States extending 12 nautical miles from the baselines of the United States determined in accordance with international law.