Sovereignty

The essence of tribal sovereignty is the ability to govern and to protect and enhance the health, safety, and welfare of tribal citizens within tribal territory. Tribal governments maintain the power to determine their own governance structures and enforce laws through police departments and tribal courts. The governments exercise these inherent rights through the development of their distinct forms of government, determining citizenship; establishing civil and criminal laws for their nations; taxing, licensing, regulating, and maintaining and exercising the power to exclude wrongdoers from tribal lands.

In addition, tribal governments are responsible for a broad range of governmental activities on tribal lands, including education, law enforcement, judicial systems, health care, environmental protection, natural resource management, and the development and maintenance of basic infrastructure such as housing, roads, bridges, sewers, public buildings, telecommunications, broadband and electrical services, and solid waste treatment and disposal.

-National Congress of American Indians (NCAI)