CFR›Title 45›Subtitle B›Chapter VI›Part 671›Subpart A ContainsSections 671.1–671.3CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart A—Introduction Sections 671.1 § 671.1 Purpose of regulations. 671.2 § 671.2 Scope. 671.3 § 671.3 Definitions. Next B Subpart B—Prohibited Acts, Exceptions