Customs territory of the United States
Customs territory of the United States means the several States, the District of Columbia, and Puerto Rico.
21 CFR § 1300.02
Any term not defined in this part shall have the definition set forth in section 102 of the Act (21 U.S.C. 802), except that certain terms used in part 1316 of this chapter are defined at the beginning of each subpart of that part.