Here are the materials:

Final UMUT Petition for Certiorari

Appendix – Final

The questions presented are:

1. Does a state have the power to tax minerals production within the territorial boundaries of an Indian nation when the state provides no services in that location whatsoever, and where the tribe’s members cannot even vote in that state’s elections, amounting to taxation without representation?

2. Does Cotton Petroleum Corp. v. New Mexico, 490 U.S. 163 (1989), permit New Mexico to tax oil and gas operators’ activities on Indian trust land even where, as here, “the State has nothing to do with the on-reservation activity,
save tax it”?

Tenth Circuit materials are here.