Here is the complaint in Glacier Electric Coop. Inc. v. Gervais (D. Mont.):
From the complaint:
The Tribal Court plainly lacks jurisdiction over the Lawsuit because the Tribal Court, and Blackfeet Tribe, lack subject matter and personal jurisdiction over Plaintiffs.
From the tribal court complaint:
A public utility may not use its privileged position, in conjunction with the demand, which it has created, as a weapon to control rates by threatening to discontinue that part of its service, if it does not receive the rate demanded.
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