Carcieri and the 1934 Test Still Shape Who Can Game

Nearly every tribal casino rests on a single legal foundation: land held in trust by the United States for the benefit of a tribe. Without trust land, there is generally no jurisdiction to conduct gaming under the Indian Gaming Regulatory Act. That is why the rules governing how tribes move land into trust—and a Supreme Court decision that limited who may do so—remain among the most consequential and least understood forces in Indian gaming. Reformed federal regulations have streamlined the mechanics of the process in recent years, but the underlying eligibility question set by the Court's 2009 ruling in Carcieri v. Salazar still determines which tribes can build a gaming economy at all.

The trust process itself is governed by regulations at 25 CFR Part 151. Interior overhauled those rules in a final rule that took effect in early 2024, with the stated goal of making fee-to-trust acquisitions simpler, faster, and less expensive. The reform established clearer presumptions across the recognized categories of acquisition—on-reservation, contiguous, and off-reservation—and created a new ‘initial Indian acquisition’ pathway aimed specifically at tribes that hold no land in trust at all. Two years on, the practical effect has been to reduce some of the procedural friction that historically delayed applications for years.

The shadow of Carcieri

What the Part 151 reforms did not change is the threshold question the Supreme Court imposed in Carcieri. In that case, the Court held that the Secretary's authority to take land into trust under the Indian Reorganization Act extends only to tribes that were ‘under federal jurisdiction’ in 1934, when the Act was passed. The decision unsettled assumptions that had governed trust acquisitions for decades and effectively created a two-tier system: tribes that can readily document a 1934 jurisdictional connection, and tribes recognized or restored later that must assemble a historical record proving they qualify.

The phrase ‘under federal jurisdiction’ does not require that a tribe was formally recognized in 1934, and Interior has developed a framework for evaluating evidence—treaties, federal correspondence, the administration of services, and other indicia—that a tribe was within the federal sphere at the relevant time. But the inquiry is fact-intensive, document-dependent, and vulnerable to legal challenge. For tribes whose nineteenth- and early twentieth-century records are thin or scattered, the burden can be substantial.

The 1934 test means two tribes with identical present-day needs can face very different odds of securing the land base a casino requires—one a formality, the other a years-long evidentiary battle.

Why this matters for gaming

The eligibility question is not academic. A tribe that cannot place land in trust cannot conduct gaming on it, and a trust acquisition that rests on a contested 1934 determination is an invitation to litigation from competitors and local governments. That risk shapes where tribes invest, how lenders price financing, and whether a project can attract the capital a modern resort requires. Even after a parcel clears the trust process, gaming eligibility hinges on a separate set of IGRA restrictions on lands acquired after 1988, which our explainer on Section 20 gaming eligibility details. The two questions—can the land go into trust, and can gaming occur on it—are distinct, and a tribe must satisfy both.

Consider the lender's perspective. A bank or institutional investor underwriting a tribal casino is, in effect, betting that the land beneath it will remain in trust and eligible for gaming for the life of the loan. If that status rests on a contested 1934 determination, the risk premium rises, covenants tighten, and some financing simply does not materialize. The strongest 1934 records translate into cheaper capital and more ambitious projects; the weakest can leave a commercially viable enterprise unable to break ground. In this way an obscure historical question reaches directly into the capital structure of modern resorts, shaping not just whether a tribe can game but how much it can build.

The interaction between the two has become especially visible as tribes pursue off-reservation projects in desirable markets. Those projects frequently combine a fee-to-trust acquisition with one of IGRA's narrow exceptions, and each layer adds legal exposure. The result is that the strength of a tribe's 1934 record can quietly determine the viability of a project that, on its commercial merits, would otherwise be sound. Our analysis of the off-reservation wave shows how often these threshold questions surface in current disputes.

A legislative fix that has not arrived

For more than fifteen years, tribal organizations have pressed Congress for a so-called ‘Carcieri fix’—a statutory amendment confirming that the Secretary may take land into trust for all federally recognized tribes regardless of recognition date. Versions of such legislation have been introduced repeatedly and have drawn bipartisan sponsors, but none has been enacted. In the absence of a fix, the burden falls on Interior's administrative determinations and on the courts, which continue to test the boundaries of the 1934 standard case by case.

The reformed Part 151 rules have made the plumbing of the trust process more efficient, and that is a meaningful improvement for tribes assembling a land base. But efficiency in the mechanics does not resolve the underlying eligibility question, and until Congress acts, the 1934 test will keep shaping which tribes can participate fully in the gaming economy. For the statutory background on how compacts and gaming authority fit together once land is secured, readers can consult our Legal Guide and our explainer on secretarial procedures for compact impasses.