25 U.S.C. § 4145

The purpose of this part is to establish a program for self-determined housing activities for the tribal communities to provide Indian tribes with the flexibility to use a portion of the grant amounts under section 4111 of this title for the Indian tribe in manners that are wholly self-determined by the Indian tribe for housing activities involving construction, acquisition, rehabilitation, or infrastructure relating to housing activities or housing that will benefit the community served by the Indian tribe.