Prediction Markets Challenge Sports Betting Rules in Missouri and Louisiana

Prediction market operators are pressing a federal question with immediate consequences for state sportsbooks: can states regulate sports event contracts as gambling, or does federal commodities law take priority? Kalshi’s lawsuit against Missouri and Polymarket US’s case against Louisiana landed on the same day the Commodity Futures Trading Commission sued Utah over its enforcement efforts.

Both companies argue that the Commodity Exchange Act gives federal law precedence over state gambling restrictions. The lawsuits put that claim against two different state licensing systems, where licensed operators and their partners compete for sports wagering customers.

Missouri says sports contracts require a state license

Missouri Attorney General Catherine Hanaway’s office ordered Kalshi to stop offering sports event contracts unless it obtains a state sports betting license. The office says those contracts amount to unlicensed sports wagering and aren’t swaps covered by the Commodity Exchange Act. Hanaway’s position is that companies “cannot repackage sports bets as event contracts” to avoid Missouri law.

The dispute could affect more than Kalshi. The state has also issued cease-and-desist letters to Polymarket, Robinhood, Crypto.com, Novig and Underdog, which Missouri says aren’t licensed to offer sports wagering.

Missouri voters approved legal sports wagering through Amendment 2, with licensed operators overseen by the Missouri Gaming Commission. The commission’s July 2026 revenue detail report illustrates the established market prediction platforms would enter. Unlicensed sports contracts would avoid the taxes paid by licensed books while seeking customers in the same state.

Louisiana’s casino-based market faces a direct test

Polymarket US, operating as QCX LLC, filed suit against Louisiana Attorney General Liz Murrill and the Louisiana Gaming Control Board. The state’s licensing structure gives priority to in-state casinos, which work with sportsbook partners. Untaxed prediction market contracts could compete for the same sports wagering business.

Louisiana regulators had already addressed prediction markets in a December 2025 advisory to sports wagering licensees and platform provider permittees. That guidance focused on businesses already inside the regulated system. Polymarket US’s lawsuit now asks whether Louisiana can enforce its rules against the prediction market operator itself.

The CFTC’s Utah case adds federal weight

The CFTC has argued publicly that Congress made it the sole federal regulator for prediction markets. Its suit against Utah seeks to block the state from applying its laws to shut down markets registered with the commission. The filing followed civil enforcement actions Utah brought in state court.

Federal appeals courts are split over whether state gambling laws can reach these contracts, leaving the boundary between state wagering rules and federal commodities oversight unsettled. The Missouri and Louisiana cases add fresh challenges to that boundary, while the CFTC’s Utah suit puts the federal regulator directly in the dispute.

For operators, the practical question is whether sports contracts can remain available across state lines under federal registration, or whether each state can require a gambling license. The outcomes could shape access in Missouri and Louisiana, and influence how other states treat prediction markets.

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