It shall be unlawful for any person to bring or possess on board any vessel or aircraft, or on board any vehicle of a carrier, arriving in or departing from the United States or the customs territory of the United States , a controlled substance in schedule I or II or a narcotic drug in schedule III or IV, unless such substance or drug is a part of the cargo entered in the manifest or part of the official supplies of the vessel, aircraft, or vehicle. ( Pub. L. 91–513, title III, § 1005 , Oct. 27, 1970 , 84 Stat. 1287 .) Editorial Notes References in Text Schedules I, II, III, and IV, referred to in text, are set out in section 812(c) of this title . Statutory Notes and Related Subsidiaries Effective Date Section effective on first day of seventh calendar month that begins after Oct. 26, 1970 , see 1105(a) of Pub. L. 91–513 , set out as a under section 951 of this title .