There are hereby authorized to be appropriated such sums as may be necessary to car
y out this chapter.
(Pub. L. 90-202, Sec. 17, formerly Sec. 16, Dec. 15, 1967, 81 Stat. 608, renumbered and amended Pub. L. 93-259, Sec. 28(a)(5), (b)(1), Apr. 8, 1974, 88 Stat. 74; Pub. L. 95-256, Sec. 7, Apr. 6, 1978, 92 Stat. 193.)