Does the doctrine of tribal sovereign immunity need to be reconsidered?

These doctrines of tribal sovereign immunity were developed decades ago, before the gaming boom created a new and economically valuable premium on tribal membership. See, e.g., Seminole Tribe of Florida v. Florida, 517 U.S. 44, 48, 116 S.Ct. 1114, 134 L.Ed.2d 252 (1996). We agree with the district court's conclusion that this case is deeply troubling on the level of fundamental substantive justice. Nevertheless, we are not in a position to modify well-settled doctrines of tribal sovereign immunity. This is a matter in the hands of a higher authority than our court.