Eighty-four years ago today the United States declared: “That all non citizen Indians born within the territorial limits of the United States be, and they are hereby, declared to be citizens of the United States.”
Until the Indian Citizenship Act of 1924, Indians occupied an unusual status under federal law. Some had acquired citizenship by marrying white men. Others received citizenship through military service, by receipt of allotments, or through special treaties or special statutes. But many were still not citizens, and they were barred from the ordinary processes of naturalization open to foreigners. Congress took what some saw as the final step on June 2, 1924 and granted citizenship to all Native Americans born in the United States.
The granting of citizenship was not a response to some universal petition by American Indian groups. Rather, it was a move by the federal government to absorb Indians into the mainstream of American life. No doubt Indian participation in World War I accelerated the granting of citizenship to all Indians, but it seems more likely to have been the logical extension and culmination of the assimilation policy. After all, Native Americans had demonstrated their ability to assimilate into the general military society. There were no segregated Indian units as there were for African Americans. Some members of the white society declared that the Indians had successfully passed the assimilation test during wartime, and thus they deserved the rewards of citizenship.
Source: NebraskaStudies.org
It was 24 years before every state enabled Indian citizens to vote.
The states that set the most stringent restrictions on voter eligibility were Arizona, Nevada, and Utah. These states required that voters be not only citizens, but residents and taxpayers as well. In Arizona, the state supreme court in Porter v. Hall, decided in 1928, ruled that Indians should be disqualified from voting because they were under “federal guardianship,” a status construed by the court to be synonymous with “persons under disability.” This decision stood for twenty years until the court finally reversed itself in Harrison v. Laveen.
Source: Encyclopedia of North American Indians