Until 1924, Native Americans were not citizens of the United States. Many Native Americans had, and still have, separate nations within the U.S. on designated reservation land. But on June 2, 1924, Congress granted citizenship to all Native Americans born in the U.S.
Under the 1924 Act, indigenous people did not have to apply for citizenship, nor did they have to give up their tribal citizenship to become a U.S. citizen. Most tribes had communal property, and to have a right to the land, individual Indian people needed to belong to the tribe.
On June 2, 1924, Congress granted United States citizenship to Native Americans born in the United States. But even after the Indian Citizenship Act passed, some Native Americans weren’t allowed to vote because the right to vote was governed by state law.
In this century, American Indian and Alaska Native men and women have held elected and appointed offices at all levels of state, local, and federal government. Charles Curtis, a member of the Kaw Tribe of Kansas, served as Vice President of the United States under President Herbert Hoover.
However, note: The citizenship of Native Americans, Indigenous Peoples, i.e., Indians, is a CONGRESSIONAL ACT, whereas, that of black citizens is an actual CONSTITUTIONAL AMENDMENT….big difference.