peals affirmed the tribal trial court on all grounds, explaining that jurisdiction over the non-Indians existed because: (1) the Nez Perce tribal code provides for tribal court jurisdiction over civil actions against non-Indians arising within or affecting the Nez Perce reservation; and (2) protecting residents from wrongful conduct of law enforcement officers operating within the exterior boundaries of the Nez Perce reservation “is a legitimate safety concern.”
Federal Court Proceedings
Having fully exhausted their remedies in tribal court, the county defendants brought a declaratory judgment suit in federal district court against Allen, the Nez Perce Tribe, the Nez Perce Tribal Court and the Judges of the Nez Perce Tribal Court. The district court granted summary judgment in favor of the county and its officers, issued a declaratory judgment that the tribal court judgment was void for lack of jurisdiction, and enjoined enforcement of the judgment.
ANALYSIS
I. Federal Question Jurisdiction
We reject the tribe’s argument that Lewis County’s complaint does not allege any claim based on federal law and that therefore the district court lacked jurisdiction under 28 U.S.C. § 1331. “[Fjederal courts have authority to determine, as a matter ‘arising under’ federal law, see 28 U.S.C. § 1331, whether a tribal court has exceeded the limits of its jurisdiction.” Strate v. A-1 Contractors, 520 U.S. 438, 117 S.Ct. 1404, 1411, 137 L.Ed.2d 661 (1997) (citing National Farmers Union Ins. Cos. v. Crow Tribe, 471 U.S. 845, 852-853, 105 S.Ct. 2447, 85 L.Ed.2d 818 (1985)). On the face of its federal court complaint, the county alleges that the tribal court exceeded its jurisdiction and violated federal constitutional and statutory rights. Accordingly, we have jurisdiction under 28 U.S.C. § 1331.
II. Civil Tribal Jurisdiction
A. The Supreme Court Framework
Jurisdictional disputes have been called “[t]he most complex problems in the field of Indian Law.” William C. Canby, Jr., American Indian Law 111 (1998). Fortunately, two Supreme Court cases serve as the foundation for our analysis: Montana v. United States, 450 U.S. 544, 101 S.Ct. 1245, 67 L.Ed.2d 493 (1981) and Strate. Together these eases provide the present contours of tribal civil authority over non-Indians.
Montana held that a tribe had no power to regulate hunting and fishing by non-Indians on non-Indian fee land within the reservation. The Supreme Court set forth a “general proposition that the inherent sovereign powers of an Indian tribe do not extend to the activities of nonmembers of the tribe,” 450 U.S. at 565, 101 S.Ct. 1245, citing to the principles of an earlier case on tribal criminal jurisdiction. Oliphant v. Suquamish Indian Tribe, 435 U.S. 191, 98 S.Ct. 1011, 55 L.Ed.2d 209 (1978). The Court, however, underscored that “[t]o be sure, Indian tribes retain inherent sovereign power to exercise some forms of civil jurisdiction over non-Indians on their reservations, even on non-Indian fee lands.” 450 U.S. at 565, 101 S.Ct. 1245. The Court then articulated what are known as “the Montana exceptions”: tribal jurisdiction will lie (1) in the context of “consensual relationships” between a nonmember and a tribe or a member of a tribe and (2) where necessary to preserve tribal self-government. Id. at 565-66, 101 S.Ct. 1245.
More than 15 years later, in Strate the Supreme Court held that Montana applied equally to the adjudicatory authority of tribal courts. The Court echoed Montana’s limits on tribal jurisdiction over nonmembers:
Our ease law establishes that, absent express authorization by federal statute or treaty, tribal jurisdiction over the conduct of nonmembers exists only in limited circumstances.
117 S.Ct. at 1409.
Strate termed Montana “the path-marking case concerning tribal civil authority over nonmembers” and succinctly restated the Montana rule:
Montana thus described a general rule that, absent a different congressional direction, Indian tribes lack civil authority