In July 2020, the U.S. Supreme Court ruled 5-4 that a large chunk of eastern Oklahoma remains an American Indian reservation.
The decision meant that Oklahoma prosecutors lack the authority to pursue criminal cases against American Indian defendants in parts of Oklahoma that include most of Tulsa.
The case, McGirt v. Oklahoma, argued by telephone in May 2020 because of the coronavirus pandemic, revolved around an appeal by an American Indian, 71-year-old Jimcy McGirt, who claimed state courts had no authority to try him for a crime committed on reservation land that belongs to the Muscogee (Creek) Nation.
Jimcy McGirt was serving a 500-year prison sentence for molesting a child.
Here's a look back at the decision and aftermath: