International airport. An international airport is any airport designated by:
(1) The Secretary of the Treasury or the Commissioner of Customs as a port of entry for aircraft arriving in the U.S. from any place outside thereof and for the merchandise carried on such aircraft;
(2) The Attorney General as a port of entry for aliens arriving on such aircraft; and
(3) The Secretary of Health and Human Services as a place for quarantine inspection.
19 CFR § 122.1
The following definitions apply in this part, unless otherwise stated: