The ruling doesn’t expand the kinds of games tribes can offer on their lands but reaffirms their autonomy to regulate gambling activities that aren’t prohibited in Texas, regardless of the state’s rules.

The US Supreme Court just handed a major victory to the Alabama-Coushatta and Ysleta del Sur Pueblo tribes of Texas. In a split 5-4 decision, the Justices ruled Texas does not have authority to regulate gaming on these reservations.

The U.S. Supreme Court has taken up a long-running legal dispute between the state of Texas and two Native American tribes: the Alabama-Coushatta tribe in Polk County and the Ysleta del Sur Pueblo tribe near El Paso.