Pub. L. 90-218, tit. II, sec. 206

Sec. 206. The amount of any appropriation or authorization which (1) is unused because of the limitation on obligations imposed by section 202(a) (2) of this title and (2) would not be available for use after June 30, 1968, shall be used only for such purposes and in such manner and amount as may be prescribed by law in the second session of the 90th Congress.