42 U.S.C. § 2707
Section, Pub. L. 93–644, § 15, , 88 Stat. 2329; Pub. L. 94–341, § 3(d), , 90 Stat. 807, authorized appropriations for fiscal years 1975 through 1977, with possibility of extension for an additional fiscal year and carryover of unobligated funds.