Section, acts June 6, 1900, ch. 791, § 1, 31 Stat. 611; Mar. 4, 1913, ch. 141, § 3, 37 Stat. 737; Ex. Ord. No. 6166, § 14, June 10, 1933; 1940 Reorg. Plan No. V, eff. June 14, 1940, 5 F.R. 2423, 54 Stat. 1238, provided that Commissioner of Immigration and Naturalization should have charge, under supervision of Attorney General, of administration of Chinese exclusion laws.