Section, which was from acts Aug. 24, 1949, ch. 506, title I, § 101, 63 Stat. 646; Sept. 6, 1950, ch. 896, ch. VIII, title I, § 101, 64 Stat. 711, and prior appropriation acts, related to employment of aliens, and was not repeated in the Independent Offices Appropriation Act, 1952, act Aug. 31, 1951, ch. 376, 65 Stat. 268.