Section, act June 16, 1955, ch. 147, title II, § 202, 69 Stat. 156, which related to employment of aliens in the Forest Service, was enacted as part of the Department of the Interior and Related Agencies Appropriation Act, 1956, and was not repeated in the Department of the Interior and Related Agencies Appropriation Act, 1957 (approved June 13, 1956, ch. 380, 70 Stat. 257), or subsequent appropriation acts.