CFR›Title 31›Subtitle B›Chapter V›Part 539›Subpart B ContainsSections 539.201–539.204CorpusDaily eCFRDisplayed edition2026-04-28Last updated2026-04-28 Subpart B—Prohibitions Sections 539.201 § 539.201 Prohibited importation of goods, technology, or services. 539.202 § 539.202 Prohibition on import-related transactions. 539.203 § 539.203 Evasions; attempts; conspiracies. 539.204 § 539.204 Exempt transactions. Previous A Subpart A—Relation of This Part to Other Laws and Regulations Next C Subpart C—General Definitions