Who Actually Regulates Sports Betting

Legal sports wagering in the United States is state-licensed. An operator's licence permits it to accept wagers from people physically inside that state, verified at the moment of the wager. Geolocation is the technical enforcement of a jurisdictional limit.

A parallel structure now claims to sit outside that entirely: federally regulated exchanges offering sports event contracts under the Commodity Exchange Act, on the argument that the CEA preempts state gambling law.

Two federal courts of appeals have reached opposite conclusions on that argument within five months of each other. Until that resolves, the answer to who regulates sports betting depends on which circuit you are standing in.

The state licence is the ordinary route. An operator applies, is licensed, and accepts wagers from within the state. Duties attach to the licensee rather than to the bettor — 205 CMR 238.32(4) is written as an obligation of the operator, requiring it to prevent proxy wagering, not as a penalty against the patron.

That framing matters more than it looks. It means enforcement runs against the entity holding the licence, and a patron's conduct is generally the operator's problem rather than the patron's.

The federal route is the contested one. An exchange registered with the CFTC argues that sports event contracts are swaps under the CEA, that the CEA occupies the field, and that state gambling law is therefore preempted as applied to them. If correct, a federally regulated exchange offers sports wagering nationwide without a single state licence — including in states that never legalised it.

The split. The Third Circuit affirmed a preliminary injunction in April 2026, holding the contracts are likely swaps and that preemption likely applies. The Ninth Circuit held in August 2026 that no likelihood of preemption had been shown and that dissolving the injunction was not an abuse of discretion. A consolidated Sixth Circuit appeal was argued in July and is undecided.

All three are preliminary-injunction postures, not merits determinations. That distinction is routinely lost in coverage and it matters: a likelihood-of-success finding is a prediction, not a holding.

"Prediction markets aren't gambling." That is the contested question, not the settled answer. Two circuits have taken opposite views of it.

A preliminary injunction is read as a ruling on the merits. It is a finding about likelihood and irreparable harm, entered before the case is decided.

The bettor is assumed to be the regulated party. In the state framework the duty runs to the operator. A patron who does something prohibited generally creates an operator problem.

Federal registration is read as federal permission. CFTC registration establishes what the exchange may do under the CEA. Whether that displaces state gambling law is exactly what the circuits disagree about.

This is jurisdictional rather than league-specific, and the variation is by state.

Some states license extensively, some narrowly, and some — California among them — have no legal sports wagering at all. That absence is the market the federal-exchange argument is built to reach, and it is why the preemption question is worth so much: a nationwide product without fifty licences is a different business from a state-by-state one.

Leagues sit outside the regulatory structure but not outside the consequences. League integrity rules govern participants, run on their own standards, and reach conduct no gaming regulator would touch.

Whether the Sixth Circuit rules, and which way. Two circuits split is a candidate for review; three is a stronger one.

Whether the Supreme Court takes it. A circuit split on federal preemption of state gambling law is the shortest path to a definitive answer on who regulates sports betting in the United States.

Whether the CFTC acts by rulemaking. An agency can resolve by rule what courts are resolving case by case.

Whether any state enforces against an exchange directly, rather than defending an injunction.

Whether operators tighten in-session identity verification. The current model verifies location continuously and identity once, at account opening. That gap is where proxy wagering lives and no operator has been required to close it.