19 U.S.C. § 1433: Report of arrival of vessels, vehicles, and aircraft

any vessel from a foreign port or place; any foreign vessel from a domestic port; any vessel of the United States carrying foreign merchandise for which entry has not been made; or any vessel which has visited a hovering vessel or received merchandise while outside the territorial sea; prescribe the manner in which arrivals are to be reported under paragraph (1); and extend the time in which reports of arrival must be made, but not later than 24 hours after arrival. Vehicles may arrive in the United States only at border crossing points designated by the Secretary. report the arrival; and present the vehicle, and all persons and merchandise (including baggage) on board, for inspection; The pilot of any aircraft arriving in the United States or the Virgin Islands from any foreign airport or place shall comply with such advance notification, arrival reporting, and landing requirements as the Secretary may by regulation prescribe. The master, person in charge of a vehicle, or aircraft pilot shall present, or transmit pursuant to an electronic data interchange system, to the Customs Service such information, data, documents, papers, or manifests as the Secretary may by regulation prescribe. depart from the port, place, or airport of arrival; or discharge any passenger or merchandise (including baggage).