25 U.S.C. § 5327
Department of the Interior: availability of funds for Indian self-determination or self-governance contract or grant support costs
Notwithstanding any other provision of law, including but not limited to the Indian Self-Determination Act of 1975, as amended [ 25 U.S.C. 5321 et seq.], on and after November 29, 1999 , funds available to the Department of the Interior for Indian self-determination or self-governance contract or grant support costs may be expended only for costs directly attributable to contracts, grants and compacts pursuant to the Indian Self-Determination Act of 1975 and on and after November 29, 1999 , funds appropriated in this title shall not be available for any contract support costs or indirect costs associated with any contract, grant, cooperative agreement, self-governance compact or funding agreement entered into between an Indian tribe or tribal organization and any entity other than an agency of the Department of the Interior.
( Pub. L. 106–113, div. B, § 1000(a)(3) [title I, § 113] , Nov. 29, 1999 , 113 Stat. 1535 , 1501A–157.)