Public Law 280

I Tribal Lands Cannot Be Encumbered by State Authority — Period

The foundational doctrine of federal Indian law holds that tribal lands held in trust by the United States are immune from state encumbrance. An "encumbrance" in property law is any claim, lien, charge, or liability attached to land that limits its free use. When California purported to assume civil and criminal jurisdiction over Indian Country under P.L. 280, it did precisely that — it attached a legal burden directly to the land itself, requiring that all activities occurring on that land be subject to a foreign sovereign's law.

The Supreme Court in McClanahan v. Arizona State Tax Commission, 411 U.S. 164 (1973), emphasized that the "backdrop" of all Indian law analysis is Indian sovereignty and the federal trust relationship. A state asserting jurisdiction over Indian Country without tribal consent is not merely regulating conduct — it is claiming dominion over land that by treaty, statute, and trust relationship belongs to the tribe and its people. That claim is itself an encumbrance, one that was never lawfully authorized.

II Worcester v. Georgia: States Have No Inherent Jurisdiction Over Indian Country

In Worcester v. Georgia, 31 U.S. 515 (1832), Chief Justice John Marshall declared unambiguously that Indian nations are "distinct, independent political communities" and that state laws "can have no force" within their boundaries. The Cherokee Nation — and by extension all federally recognized tribes — exists outside the ordinary reach of state authority. This was not a narrow ruling; it was a structural principle about the nature of sovereignty in North America.

P.L. 280 did not overrule Worcester. It attempted to route around it — granting states a power they otherwise lack — but it did so without amending the underlying constitutional structure. The states named in P.L. 280 have no inherent jurisdiction over Indian Country. Whatever authority they have is purely derivative, delegated by Congress, and therefore constrained by the trust doctrine and the limits Congress itself placed on that delegation.

The critical implication: if Congress's delegation was itself unauthorized — if it violated treaty obligations, the trust doctrine, or the constitutional structure of Indian affairs — then the state's derived authority is equally void. A defective grant cannot convey valid title.

III No Tribal Consent — A Fundamental Violation of Self-Determination

P.L. 280 was enacted in 1953 without consulting, notifying, or obtaining the consent of a single California tribe. This was not an administrative oversight — it was the deliberate policy of the "termination era," an era that Congress itself later repudiated as a failure and a wrong.

The Indian Civil Rights Act of 1968 corrected the course by requiring tribal consent before any future state assumptions of P.L. 280 jurisdiction. This congressional acknowledgment is itself powerful evidence that the original consent-free imposition was improper. When Congress says "from now on, you need consent," it is implicitly conceding that the prior procedure was deficient.

Under principles of customary international law and the United Nations Declaration on the Rights of Indigenous Peoples (UNDRIP), to which the United States became a signatory in 2010, indigenous peoples possess the right to free, prior, and informed consent before any governmental action affecting their lands and governance. P.L. 280 violated every element of that standard — there was no freedom, no prior notice, and no consent of any kind.

IV State Courts Have No Lawful Authority to Sit on Tribal Land

Perhaps the most direct encumbrance argument concerns the physical and legal presence of state courts within Indian Country. A court is not merely a judicial proceeding — it is a physical manifestation of sovereign authority over territory. When a state court purports to exercise jurisdiction over matters arising on tribal land, it asserts that the land itself falls within the state's domain. That assertion is legally false.

Bryan v. Itasca County, 426 U.S. 373 (1976) drew a critical distinction between adjudicatory jurisdiction (courts deciding disputes) and regulatory jurisdiction (the authority to govern conduct). The Supreme Court held that P.L. 280 granted only the former, not the latter. But even adjudicatory jurisdiction on tribal land requires that the land be treated as if it were state territory — an impossible legal fiction that contradicts the foundational trust status of Indian Country.

When a state court asserts jurisdiction over an act committed on tribal trust land, it necessarily claims that the rules of conduct applicable on that land derive from state law. But trust land — land held by the United States in trust for a tribe — is by definition land over which state law does not govern. The trust itself is a federal instrument that preempts state authority. You cannot simultaneously hold land in federal trust and subject it to state regulatory norms. The two are legally incompatible.

V P.L. 280 Violated Existing Treaty Obligations

Many California tribes — including those of the Mendocino region — are parties to treaties, agreements, and executive orders that established their reservations as inviolable homelands, free from state interference. Under the Supremacy Clause of the U.S. Constitution, treaties are the "supreme law of the land." A statute (like P.L. 280) that conflicts with a treaty is presumptively invalid as applied to the treaty-protected tribe.

The canon of construction in Indian law further provides that ambiguities in statutes must be resolved in favor of the tribe. Where P.L. 280 is ambiguous as to whether it authorizes state courts to intrude upon treaty-guaranteed territorial sovereignty, that ambiguity must be resolved for the tribe — meaning P.L. 280 cannot, by its own terms, authorize what the treaties forbid.

The 18 unratified California treaties of 1851–52 further demonstrate that the United States made promises to California tribes — promises of land, peace, and self-governance — that were betrayed by non-ratification and compounded by P.L. 280. These historical broken promises do not disappear; they create a continuing legal and moral obligation on the federal government to protect, not expose, California tribal sovereignty.

VI The Trust Doctrine Preempts State Jurisdiction

The federal trust relationship is not merely a political promise — it is a legally enforceable doctrine with preemptive force. The Supreme Court recognized in White Mountain Apache Tribe v. Bracker, 448 U.S. 136 (1980), that federal statutes and regulations relating to Indian affairs may preempt state law even without an express preemption provision, if "the federal interest is sufficiently strong to preclude state regulation."

The federal interest in protecting tribal trust lands from external encumbrance is among the strongest interests in the entire structure of federal Indian law. It is the reason trust lands cannot be alienated, taxed, or condemned by states. That same interest — protecting the integrity and free use of trust land for tribal benefit — should be understood to preempt state criminal and civil jurisdiction that imposes state norms on conduct occurring within the trust territory.

When California courts prosecute tribal members for conduct on tribal trust land, they are not merely adjudicating facts — they are defining what conduct is permissible on that land. That is a regulatory function. Under Bracker balancing, the federal interest in tribal self-governance on trust land vastly outweighs California's interest in extending its criminal code to a sovereign territory that falls outside its ordinary domain. P.L. 280 cannot overcome that preemption, because P.L. 280 itself did not authorize the full regulatory encumbrance that California has sought to impose.