22 U.S.C. § 601
Section, acts June 15, 1917, ch. 30, title VIII, §3, 40 Stat. 226; Mar. 28, 1940, ch. 72, §6, 54 Stat. 80, related to acting as a foreign agent without notice to Secretary of State. See section 951 of Title 18, Crimes and Criminal Procedure.