Here is the complaint in Perank v. United States (D. Utah):
Here are the materials in Hopi Tribe v. Trump (D. D.C.):
Prior posts here.
Here is the pleading in Hopi Tribe v. Trump (D.D.C.):
The motion is here.
Here is the motion in Hopi Tribe et al v. Donald J. Trump et al, 17-cv-02590 (D.D.C.):
Link: Case Archive
1. Whether the Acts of Congress, authorizing the President to set apart and reserve any reservoir site or other lands necessary to conserve and protect the water supply for the Indians or for general agricultural development, diminished the Uintah and Ouray Reservation.
2. Whether as used in 18 U.S.C. § 1151(a), the term “Indian Country” includes the National Forest land, and the right of way running through the National Forest lands where the alleged criminal conduct occurred, for purpose of federal criminal jurisdiction.
Lower court materials here.