Editorial Notes Codification Section, Pub. L. 88–452, title II, § 221 , Aug. 20, 1964 , 78 Stat. 524 ; Pub. L. 89–253, § 30(b) , Oct. 9, 1965 , 79 Stat. 979 ; Pub. L. 89–794, title II, § 218 , Nov. 8, 1966 , 80 Stat. 1464 , extended the program through June 30, 1970 , and provided that only such sums may be appropriated as the Congress might authorize by law, prior to the general amendment of Part D of this subchapter by Pub. L. 90–222, title I, § 104 , Dec. 23, 1967 , 81 Stat. 705 . See section 2837 of this title .