Here are the materials in City of Duluth v. Fond Du Lac Band of Chippewa:

CA8 Opinion

Fond du Lac Brief

City of Duluth Brief

Fond du Lac Band Reply

City of Duluth Reply

From the court’s summary:

Indian Gaming Regulatory Act. A binding adjudication by a federal agency, which has been tasked with interpreting and enforcing a statute enacted by Congress, represents a change in the law for the purposes of Rule 60(b); here, the National Indian Gaming Commission’s decision that the agreement between the parties concerning the operation of a casino was in violation of the Indian Gaming Regulatory Act made illegal what the earlier consent decree between the parties was designed to enforce, and the district court did not err in deciding to grant prospective relief from continued enforcement of the 1994 consent decree by dissolving the decree as it related to the years 2011-2036; the district court erred in concluding that it could not grant retrospective relief under Rule 60(b)(6) and its ruling denying retrospective relief on rent payments from 2009 to 2011 is reversed, and the question remanded for further consideration.

Lower court materials here.