Foster v. Chatman, 578 U.S. ___ (2016), was a United States Supreme Court case in which the Court held that the state law doctrine of res judicata does not preclude a Batson challenge against peremptory challenges if new evidence has emerged. The Court held the state courts' Batson analysis was subject to federal jurisdiction because "[w]hen application of a state law bar 'depends on a federal constitutional ruling, the state-law prong of the court’s holding is not independent of federal law, and our jurisdiction is not precluded,'" under Ake v. Oklahoma.