Section 168 of title 8, referred to in subsec. (c), was repealed by act June 27, 1952, ch. 477, § 403(a)(13), 66 Stat. 279. See section 1286 of Title 8, Aliens and Nationality.

In subsec. (a), “section 967 of title 18” substituted for “section 1, title V, chapter 30, of the Act approved June 15, 1917 (40 Stat. 217, 221; U.S.C., 1934 edition, title 18, sec. 31)” on authority of act June 25, 1948, ch. 645, 62 Stat. 863, section 1 of which enacted Title 18, Crimes and Criminal Procedure.

For delegation to Secretary of Homeland Security of authority vested in President by subsecs. (a) and (b) of this section, see sections 1(n) and 1(o) of Ex. Ord. No. 10637, Sept. 16, 1955, 20 F.R. 7025, as amended, set out as a note under section 301 of Title 3, The President.