This case is Lower Sioux Indian Community v. Kraus-Anderson Const. Co. (Minn. App.). Here is the unpublished opinion.

An exceprt:

Because Lower Sioux is not a necessary party to this litigation, we reverse the district court’s order joining Lower Sioux as a party and enjoining it from pursuing parallel tribal court litigation.

The determination that Lower Sioux is not a necessary party is dispositive. Thus, we need not reach and do not reach the parties’ dispute over whether Lower Sioux waived its sovereign immunity, either contractually or by initiating the district court action. Nor do we take any position on the jurisdiction of the tribal court over the subcontractor respondents or whether the subcontractors may be joined as parties to the tribal court proceedings. Those determinations are for the tribal court. See Klammer v. Lower Sioux Convenience Store, 535 N.W.2d 379, 381 (Minn.App.1995) (explaining that comity requires allowing tribal court to determine its own jurisdiction); Rule 12(c) of the Lower Sioux Community in the State of Minnesota Judicial Code Rules of Civil Procedure, available at http://maiba.org/pdf/LowerSioux.pdf (addressing standard for joinder in tribal court). We also deny as moot Kraus-Anderson’s motions to modify the record and to strike portions of one respondent’s brief because the disputes raised by the motions are relevant only to the issues that we have declined to reach.