Civil matters

The two exceptions are both record questions

The first exception is consent. A tribe may regulate, through taxation, licensing, or other means, the activities of nonmembers who enter consensual relationships with the tribe or its members, through commercial dealing, contracts, leases, or other arrangements.

Look at that list: commercial dealing, contracts, leases, other arrangements. Every item is a thing your government issued, signed, or recorded. If a nonmember holds a lease from your land office, a license from your commission, or a contract with your enterprise, the consensual relationship is not a theory anyone has to reconstruct. It is a document with a date, and it is either in your record or it is somewhere in a drawer.

The second exception is effect. A tribe may also retain inherent power to exercise civil authority over the conduct of non-Indians on fee lands within its reservation when that conduct threatens or has some direct effect on the political integrity, the economic security, or the health or welfare of the tribe. That is a factual showing too, and a court making it is drawing on what the government actually recorded about the conduct and its consequences.

So the honest statement is this: the law here is narrow and later cases have read it narrowly. Strate v. A-1 Contractors and Plains Commerce Bank both cut back on how far the exceptions reach, and Plains Commerce warned that they cannot be read in a way that would swallow the rule. Nothing about a records system changes that. What a records system changes is whether, when your court does have the case, the facts that establish it are provable.

Montana concerns nonmembers, and Montana itself says so. The same opinion preserves the other side of the line in its own words: tribes retain their inherent power to determine tribal membership, to regulate domestic relations among members, and to prescribe rules of inheritance for members, because those powers involve only the relations among members of a tribe. Nothing in Montana or the cases after it limits a tribe's civil authority over its own citizens. Do not let a nonmember doctrine shrink how your court sees its own people.

The instrument is the jurisdiction

This is the practical version of the consent exception, and it is the reason the civil docket and the land and licensing offices belong on one record.

A nonmember signs a lease with your land office in 2019. In 2026 there is a dispute. Whether your court hears it may turn on that lease: what it said, who signed it, when, and what your code required of it. On a system where land is one filing cabinet and the court is another, that lease is a request, a search, and a hope that the file is complete. On a person-centered governed record, the nonmember, the instrument, and the matter are already linked, and the lease is a sealed document that reproduces identically to the day it was signed.

The same is true of a license, a permit, a right-of-way, or a contract with a tribal enterprise. The instrument that creates the relationship is the instrument that answers the jurisdictional question, and a government that keeps its instruments provably keeps its jurisdiction provably.

Where the code is yours

Federal case law draws an outer boundary on reaching nonmembers. Inside that boundary, your civil code is the law: what a claim has to state, what the limits are, how service is made, what remedies your court can order, and how long a party has to answer.

We build that code in, section by section, with your court. Every deadline the system computes shows the section of your law it came from, and where your practice and your written code disagree, the system shows both rather than quietly picking one.

One honest note. Whether your court has jurisdiction over a particular nonmember in a particular matter is a legal question for your court and your attorneys, and it turns on facts, place, and a line of cases that has moved over time. Nothing here decides it, and nothing here is legal advice. What the system does is make sure that when the question is asked, the facts are on the record rather than in a drawer.

What the land under their feet does, and does not, settle

Montana's second exception is written about conduct on fee lands, which invites an assumption worth resisting: that Montana simply stops at the boundary of tribal land. It does not, and this is one of the places where a confident sentence in either direction is unsafe.

The Supreme Court was asked almost exactly this in Nevada v. Hicks and declined to give the clean answer. It read Montana as clearly implying that the general rule applies to both Indian and non-Indian land, called ownership status only one factor to consider, allowed that the factor may sometimes be dispositive, and held that the existence of tribal ownership is not alone enough to support regulatory jurisdiction over nonmembers.

The Ninth Circuit has taken a different route, holding that on tribal land, absent competing state interests, the tribe's status as landowner supports regulatory authority over nonmember conduct without a separate Montana analysis. Even there the court has been careful: it has said its cases do not exclude Montana as a source of that authority, treating the right to exclude as an additional and independent source alongside Montana rather than a replacement for it, and it has acknowledged that other jurisdictions read Hicks as having eliminated that framework.

So the honest statement is that land status matters a great deal, the doctrinal route is contested and circuit-dependent, and neither blanket sentence is safe. What that means for your office is unglamorous and useful: the facts that decide it, what land it happened on, who owns it, what the tribe retained, and what relationship the nonmember had with the tribe, are all record facts. The doctrine may be unsettled. Your file does not have to be.

Four categories that are not synonyms, and the analysis turns on which one is under the person's feet: Indian country as federal law defines it, tribal trust land, allotted land, and non-Indian fee land. A checkerboarded reservation, where ownership alternates parcel by parcel, is the hard case. This is a question for your court and your attorneys, and nothing here decides it.

Questions courts ask about civil matters

Can our court hear a case against a nonmember?

Sometimes, and the analysis starts with Montana v. United States, which states that a tribe's inherent sovereign powers generally do not extend to the activities of nonmembers, then names two exceptions: a consensual relationship such as commercial dealing, a contract, or a lease; and conduct on fee land that threatens or directly affects the political integrity, economic security, or health or welfare of the tribe. Later cases have read those exceptions narrowly. It is a question for your court and your attorneys, and the facts that answer it should be on your record.

Does that rule limit us over our own members?

No. Montana is about nonmembers. Your civil authority over your own citizens rests on the tribe's retained inherent sovereignty, and your council's code is what governs it.

What actually helps us, practically?

Holding your instruments where the court can see them. If a nonmember's relationship with the tribe runs through a lease, a license, or a contract, that document is often the fact the jurisdictional question turns on. On one governed record it is already linked to the person and the matter, sealed, and reproducible exactly as signed.