CFR›Title 50›Chapter I›Part 19›Subpart A ContainsSections 19.1–19.4CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart A—Introduction Sections 19.1 § 19.1 Purpose of regulations. 19.2 § 19.2 Scope of regulations. 19.3 § 19.3 Relation to other laws. 19.4 § 19.4 Definitions. Next B Subpart B—Prohibitions