20 U.S.C. § 6439
The Secretary may reserve not more than 2.5 percent of the amount made available to carry out this subpart for a fiscal year—
(Pub. L. 89–10, title I, § 1419, as added Pub. L. 107–110, title I, § 101, Jan. 8, 2002, 115 Stat. 1587.)