Seminole Tribe v. Butterworth (1981): The Case That Started Tribal Gaming
A regulatory-versus-prohibitory distinction, decided in 1981, is why tribal gaming exists at all.
Every account of tribal gaming's origins eventually arrives at a bingo hall in Hollywood, Florida. In 1979 the Seminole Tribe of Florida opened a high-stakes bingo operation on its reservation, offering prizes far above what Florida's charitable bingo statute allowed and operating on days the statute did not permit. The Broward County sheriff, Robert Butterworth, announced he would enforce state law and shut it down. The tribe sued to stop him. The resulting decision, Seminole Tribe of Florida v. Butterworth, 658 F.2d 310 (5th Cir. 1981), is the legal foundation on which a $46 billion industry was subsequently built.
The problem Public Law 280 created
Florida is a Public Law 280 state. Enacted in 1953, Public Law 280 transferred criminal jurisdiction over Indian country from the federal government to certain states, and Florida later assumed that jurisdiction. On its face, that seemed to give Butterworth a straightforward argument: Florida law applied on the reservation, Florida law capped bingo prizes, and the Seminole operation exceeded the cap.
The difficulty is that Public Law 280 granted states criminal jurisdiction and a limited grant of civil adjudicatory authority. It did not make states the general regulators of Indian country. Courts had already recognized that reading it as a wholesale transfer of regulatory power would effectively terminate tribal self-government by statute — something Congress had not done in the text. Our Public Law 280 explainer covers the statute's scope and the states it reaches.
The regulatory-versus-prohibitory test
The courts resolved the tension with a distinction that has governed Indian gaming ever since. If a state law is prohibitory — if the state forbids the conduct outright as against public policy — then it is criminal in nature and applies in Indian country under Public Law 280. If a state law is regulatory — if the state permits the conduct but controls how, when, where, and by whom it may occur — then it is civil-regulatory and does not apply.
Florida did not prohibit bingo. It licensed and regulated it, allowing charitable organizations to operate games within limits on prize size and frequency. The federal district court concluded, and the Fifth Circuit agreed in its October 1981 decision, that a state which permits bingo subject to conditions cannot claim that bingo violates its public policy. The Florida bingo statute was regulatory. It therefore did not reach the Seminole reservation, and the sheriff could not enforce it there.
The test is deceptively simple: ask whether the state permits the activity at all. If it does, the state is regulating rather than prohibiting, and Public Law 280 does not carry that regulation onto tribal land.
What followed immediately
The Seminole bingo hall became the first tribally owned high-stakes bingo operation in the United States and, for several years, an extraordinarily profitable one. Word travelled quickly through Indian Country. Within a few years, dozens of tribes had opened bingo operations on the same legal theory, and a parallel line of litigation opened in California, where counties attempted to shut down tribal card rooms and bingo halls under the same reasoning Butterworth had used.
That California line produced California v. Cabazon Band of Mission Indians in 1987, in which the Supreme Court adopted the regulatory-prohibitory framework and applied it nationally. Cabazon is the more famous case and the one usually credited with legalizing tribal gaming. But Cabazon largely ratified an analysis that Butterworth had already made and that lower courts had spent six years refining.
The line from Butterworth to IGRA
Cabazon left states with no regulatory role in tribal gaming at all, which was politically unsustainable. Congress responded in 1988 with the Indian Gaming Regulatory Act, a negotiated settlement that gave tribes a federal statutory right to game while giving states a seat at the table for the highest-stakes forms of it.
IGRA's three-class structure is a direct descendant of the Butterworth analysis. Class I traditional and ceremonial gaming remains exclusively tribal. Class II — bingo and games similar to it, including the electronic aids that grew out of exactly the operation Butterworth protected — is regulated by the tribe with National Indian Gaming Commission oversight and requires no state agreement. Class III, covering slot machines and banked table games, requires a tribal-state compact. Our Class II versus Class III explainer details where the line falls and why it still generates litigation.
The through-line is that Class II exists as a compact-free category precisely because bingo was the activity at issue in 1979. Had the Seminole Tribe opened a blackjack room instead, the statutory architecture would likely look different.
Two footnotes worth knowing
First, the named defendant had an unusual afterlife. Robert Butterworth went on to serve as Florida's attorney general for sixteen years, a tenure during which he continued to litigate against the Seminole Tribe over gaming — including the dispute that produced Seminole Tribe of Florida v. Florida in 1996, which held that states retain Eleventh Amendment immunity from IGRA suits and thereby created the compacting impasse that still shapes negotiations today.
Second, the tribe that won the case became the industry's largest operator. The Seminole Tribe of Florida parlayed its bingo revenue into a casino portfolio and, in 2007, acquired Hard Rock International outright — a global hospitality brand now owned by the tribe whose right to run a bingo game a county sheriff once tried to extinguish.
The doctrinal point endures. When a tribe today argues that a state cannot apply its gambling laws on the reservation because the state licenses the same activity elsewhere, it is running the Butterworth argument. Forty-five years on, it is still the argument that works.