It establishes a legal framework for tribes to exercise their right to govern and protect tribal citizens, lands, and resources. It is amended in 1988 with the creation of the Tribal Self-Governance Demonstration Project, giving Indian tribes the responsibility of administering services and activities previously managed by the Department of the Interior. In 1994 and 2000, the act is expanded again, permanently authorizing the Self-Governance project to the Indian Health Service. These policies help set the environment for present-day self-determination efforts.