Here is the opinion in Wallace v. N. Cheyenne Corrections Officers (D. Mont.) — Wallace v Northern Cheyenne Corrections Officers
An excerpt:
Frequently, prisoners bring denial of medical care claims in federal court pursuant to 42 U.S.c. § 1983. But Wallace cannot establish that the tribal entities and officers acted “under color of state law,” as is required to state a claim under § 1983. “[N]o action under 42 U.S.C. § 1983 can be maintained in federal court for persons alleging deprivation of constitutional rights under color of tribal law.” RJ Williams Co. v. Fort Belknap Hous. Auth., 719 F.2d 979, 982 (9th Cir. 1983).
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