Oklahoma v. Castro-Huerta challenges the reach of the United States Supreme Court’s landmark ruling in McGirt v. Oklahoma and tests the settled criminal jurisdiction scheme within Indian Country. On April 27, 2022, beginning at 10:00 a.m. EST., the U.S. Supreme Court will hear argument on the sole question of whether a state court has concurrent jurisdiction with a federal court to prosecute non-Indians who commit crimes against Indians in Indian country. The State of Oklahoma (“Petitioner”) argues that it has concurrent jurisdiction to prosecute such crimes. Castro-Huerta (“Respondent”) argues that the Court should adopt the current understanding that the federal government has exclusive authority to prosecute here.