CFR›Title 50›Chapter I›Part 16›50 CFR Part 16 Subpart A Citation50 CFR Part 16 Subpart AContainsSections § 16.1–§ 16.3CorpusDaily eCFRDisplayed edition2026-10-05Last updated2026-10-05 Subpart A—Introduction Sections § 16.1 § 16.1 Purpose of regulations. § 16.2 § 16.2 Scope of regulations. § 16.3 § 16.3 General restrictions. Authority18 U.S.C. 42.Source39 FR 1169, Jan. 4, 1974, unless otherwise noted.