No tribally controlled postsecondary career and technical institution for which an Indian tribe has designated a portion of the funds appropriated for the tribe from funds appropriated under section
13 of title
25, may be denied a contract for such portion under the Indian Self-Determination and Education Assistance Act [
25 U.S.C.
450 et seq.] (except as provided in that Act), or denied appropriate contract support to administer such portion of the appropriated funds.