WASHINGTON — The Supreme Court on Thursday ruled that much of eastern Oklahoma falls within an Indian reservation, a decision that could reshape the criminal-justice system by preventing state authorities from prosecuting offenses there that involve Native Americans.
The 5-to-4 decision, potentially one of the most consequential legal victories for Native Americans in decades, could have far-reaching implications for the people who live across what is now deemed “Indian Country” by the high court. The lands include much of Tulsa, Oklahoma’s second-biggest city.
The case was steeped in the United States government’s long history of brutal removals and broken treaties with Indigenous tribes, and grappled with whether lands of the Muscogee (Creek) Nation had remained a reservation after Oklahoma became a state.
Justice Neil M. Gorsuch, a Westerner who has sided with tribes in previous cases and joined the court’s more liberal members, said that Congress had granted the Creek a reservation, and that the United States needed to abide by its promises.