Pub. L. 85-241, tit. IV, sec. 505

Sec. 505. Contracts made by the United States under this Act shall be awarded, insofar as practicable, on a competitive basis to the lowest responsible bidder, if the national security will not be impaired and the award is consistent with chapter 137 of title 10, United States Code, and section 15 of the Act or August 9, 1955 (69 Stat. 547, 551). The Secretaries of the military departments shall report semiannually to the President of the Senate and the Speaker of the House of Representatives with respect to all contracts awarded on other than a competitive basis to the lowest responsible bidder.