31 C.F.R. § 539.201 Prohibited importation of goods, technology, or services.
Title 31 - Money and Finance: Treasury
Except as otherwise authorized, the importation into the United States, on or after the effective date, directly or indirectly, of any goods, technology, or services produced or provided by a designated foreign person, other than information or informational materials, is prohibited.
Title 31: Money and Finance: Treasury
PART 539—WEAPONS OF MASS DESTRUCTION TRADE CONTROL REGULATIONS
Subpart B—Prohibitions
§ 539.201 Prohibited importation of goods, technology, or services.