"The Prairie Band Potawatomi Nation will ask a judge next month to let it join Attorney General Paul Morrison's anti-gambling lawsuit.
Morrison's "friendly" lawsuit argues that the state law allowing casinos and slot machines at racetracks is unconstitutional.
The suit move was seen as a way to get a definitive ruling on the law's constitutionality.
A spokeswoman for the Attorney General says Morrison does not want the tribe involved.
He thinks that will just slow down the process of getting a court ruling."