1. Suppose a nontribal member is sued in a court of an Indian Tribe, and later sues in federal court claiming that the tribal court lacked jurisdiction. Can the Tribe end the federal case by invoking sovereign immunity?

and

2. Does an Indian Tribe have jurisdiction to issue and enforce a personal protection order against a non-Tribal member who has none of the ties to the Tribe required by Section 1304 of the Violence Against Women Reauthorization Act?

Whether a tribe can invoke sovereign immunity to end a federal case challenging the tribe's jurisdiction over a non-tribal member