List of federally recognized tribes In the Unit
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In the United States, the Indian tribe is a fundamental unit, and the constitution grants Congress the right to interact with tribes. More specifically, the Supreme Court of the United States in United States v. Sandoval, 231 U.S. 28 (1913), warned, "it is not... that Congress may bring a community or body of people within range of this power by arbitrarily calling them an Indian tribe, but only that in respect of distinctly Indian communities the questions whether, to what extent, and for what time they shall be recognized and dealt with as dependent tribes" (at 46).[4] Federal tribal recognition grants to tribes the right to certain benefits, and is largely controlled by the Bureau of Indian Affairs (BIA).
While trying to determine which groups were eligible for federal recognition in the 1970s, government officials became acutely aware of the need for consistent procedures. To illustrate, several federally unrecognized tribes encountered obstacles in bringing land claims; United States v. Washington (1974) was a court case that affirmed the fishing treaty rights of Washington tribes; and other tribes demanded that the U.S. government recognize aboriginal titles. All the above culminated in the Indian Self-Determination and Education Assistance Act of 1975, which legitimized tribal entities by partially restoring Native American self-determination.
https://en.wikipedia.org/wiki/List_of_federal...zed_tribes