Arizona AG Charges Kalshi With 20 Criminal Counts as Federal-State Jurisdiction War Escalates
Arizona Attorney General Kris Mayes filed 20 criminal counts against prediction market operator Kalshi on March 17, 2026, alleging the platform ran an unlicensed gambling business and accepted election wagers prohibited under state law. The charges, filed in Maricopa County Superior Court against KalshiEx LLC and Kalshi Trading LLC, represent the most serious state-level enforcement action yet taken against a federally registered event-contract exchange. The filing arrived the same day Congress introduced the BETS OFF Act, compressing two distinct regulatory threats into a single 24-hour window that materially sharpens the legal risk profile for the entire prediction markets sector.
The Scope of the Arizona Charges
The 20 counts span several categories of alleged violation. Four relate specifically to election wagering, covering contracts tied to the 2028 presidential race, the 2026 Arizona gubernatorial contest, the 2026 Republican gubernatorial primary, and the Arizona Secretary of State race. Arizona law does not merely regulate election betting; it prohibits it outright, which distinguishes this case from licensing disputes in other states. Additional counts target sports wagering, including proposition bets on individual player statistics across professional and college events. One count references a contract on whether the SAVE Act would become federal law, illustrating the breadth of Kalshi’s contract catalogue that state prosecutors find objectionable.
Attorney General Mayes was direct in her characterisation: “Kalshi may brand itself as a ‘prediction market,’ but what it’s actually doing is running an illegal gambling operation.” She reinforced the structural point that no private actor can self-determine its own regulatory classification. “No company gets to decide for itself which laws to follow,” she said.
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Kalshi had anticipated the Arizona action. The company sued the state in federal court on March 12, five days before the criminal information was filed, following a pattern it also applied against Iowa and Utah within the same three-week period. The company’s core argument is that the Commodity Futures Trading Commission holds exclusive jurisdiction over event contracts under federal derivatives law, rendering state gambling statutes inapplicable to its operations. A Kalshi spokesperson described the Arizona criminal case as resting on “paper-thin arguments.”
That federal preemption argument has produced uneven results in court. A federal judge in Tennessee issued a temporary block on state enforcement, which Kalshi would cite as supportive precedent. However, a federal judge in Ohio recently denied Kalshi’s request for a preliminary injunction, with Judge Sarah Morrison ruling that Kalshi’s concerns were “dwarfed by Ohio’s interest in exercising its police power.” A federal judge in Nevada separately held that Kalshi’s sports contracts fall within state gaming authority, and a Massachusetts state court reached a comparable conclusion. The weight of recent rulings, taken collectively, does not strongly favour Kalshi’s preemption position, even if the underlying legal question remains formally unsettled.
Mayes addressed the litigation pattern directly: “Kalshi is making a habit of suing states rather than following their laws.” She noted three federal lawsuits filed in under three weeks as evidence of a deliberate strategy to shift enforcement disputes into federal forums before state prosecutors could act. As a structural matter, this approach carries meaningful execution risk; each additional state that files charges increases the jurisdictional surface area Kalshi must defend simultaneously, compounding pressures that prediction markets have faced across legislative, legal and regulatory channels throughout early 2026.
The BETS OFF Act and the War-Betting Dimension
Separately, Texas Representative Greg Casar and Connecticut Senator Chris Murphy introduced the Banning Event Trading on Sensitive Operations and Federal Functions Act, known as the BETS OFF Act, on March 17. The legislation targets what Murphy characterised on March 4 as “highly unusual bets” placed on Polymarket suggesting that individuals with advance knowledge of US and Israeli military planning against Iran had traded on that information. The bill would prohibit prediction market contracts on military operations and other sensitive government functions, framing the concern as one of government corruption rather than consumer protection.
The BETS OFF Act and the Arizona charges are legally distinct, but they share a common structural logic: that prediction markets have expanded their contract scope faster than their regulatory frameworks can accommodate, and that the gap between federal permissiveness and state restriction creates genuine harm, whether through election integrity risks, insider trading analogies, or unlicensed gambling exposure. Polymarket’s separate difficulties in this period, including scrutiny over war-related contracts, reinforce that dynamic; for a fuller account of those parallel pressures, Polymarket’s regulatory challenges across multiple jurisdictions have followed a strikingly similar trajectory.
The Structural Tension at the Centre of This Dispute
The CFTC under Chairman Mike Selig has advanced rulemaking asserting exclusive federal jurisdiction over event contracts, a posture broadly supportive of Kalshi’s operating model. That federal signal, however, does not automatically displace state law, and courts have not yet produced a definitive ruling on the preemption question. Until they do, Kalshi faces a structurally untenable situation: operating a national exchange while simultaneously litigating its legality in individual state jurisdictions, each with its own statutory framework and enforcement timeline.
The Arizona case is materially different from a civil regulatory action. Criminal charges carry reputational consequences, potential officer liability, and procedural demands that civil injunction proceedings do not. Whether the charges survive Kalshi’s anticipated federal preemption challenge will likely depend on how appellate courts interpret the intersection of the Commodity Exchange Act and state police powers, a question with no clean precedent. The outcome will have significant implications not only for Kalshi but for every platform operating event-contract markets in the United States. The sector is, at this point, navigating a genuine jurisdictional bifurcation, and the resolution of that structural conflict will determine whether federally regulated prediction markets can function as national exchanges or must instead operate as a patchwork of state-licensed businesses. That question is unlikely to be answered quickly, and the litigation costs of reaching an answer will be substantial regardless of outcome.
