Federal Judge Rules Utah Can Enforce Anti-Gambling Laws Against Kalshi Sports Betting Contracts

A federal judge ruled Tuesday that Utah can enforce its anti-gambling laws against Kalshi, dealing a significant blow to the prediction market’s argument that federal oversight shields its sports contracts from state regulation. U.S. District Judge Robert J. Shelby granted summary judgment to Utah, rejecting the lawsuit Kalshi filed against the state in February and ordering the case closed.

Kalshi had argued that its status as a CFTC-registered exchange placed its sports-related event contracts beyond the reach of state gambling law entirely. Shelby disagreed, finding that the Commodity Exchange Act does not preempt Utah’s ability to criminalize gambling within its borders. A Kalshi spokesperson said the company will appeal.

Why the Judge Sided With Utah

Utah’s case stemmed from a state law passed earlier this year that folded proposition bets into its legal definition of gambling, a move squarely aimed at Kalshi’s sports contracts. Kalshi sued in February, framing the dispute in the same terms it has used across the country: as a federally licensed designated contract market, its event contracts are financial derivatives regulated exclusively by the Commodity Futures Trading Commission, and no state can layer its own gambling statute on top of that.

Shelby wasn’t persuaded. In his opinion, he wrote that the Commodity Exchange Act’s framework, combined with a long history of state authority over gambling, doesn’t leave “no room” for Utah to supplement federal law with its own restrictions. He pointed to Congress having recognized state gambling regulation as a traditional power dating back to the early 1800s, and noted that requiring Kalshi to exclude Utah customers from certain sports contracts isn’t an unreasonable burden. “Kalshi has not shown that compliance with both federal and state law is impossible,” Shelby wrote, concluding that it would be inconsistent for Congress to let states set their own gambling laws while also forcing them to allow access to any event contract a federally registered exchange chooses to list.

Part of a Bigger, Messier Fight

The Utah decision lands squarely on the state’s side of what has become a fractured national legal battle over whether sports prediction contracts are federally regulated financial products or thinly disguised sports betting subject to state law. Kalshi has now lost at the preliminary stage in Nevada, Maryland, and Ohio, while pulling out wins in Tennessee and, most notably, a Third Circuit Court of Appeals decision in April that affirmed an injunction against New Jersey and found the CEA both field- and conflict-preempts the state’s gambling laws for contracts traded on a designated contract market. That split among courts is exactly why the CFTC itself escalated the fight in April, suing Arizona, Connecticut, and Illinois over what it called unlawful state interference with federally regulated markets.

The New Jersey case is a useful contrast to what just happened in Utah. There, the Third Circuit found Kalshi’s sports contracts qualify as “swaps” under the Commodity Exchange Act, putting them within the CFTC’s exclusive jurisdiction and blocking the state from applying its own gambling laws or constitutional prohibition on collegiate sports betting. Judge Shelby read the same federal statute and reached the opposite conclusion, finding room for state gambling law to coexist with CFTC oversight rather than being swept aside by it. Nevada’s case has been similarly chaotic: a federal judge initially sided with Kalshi and blocked state enforcement, only to reverse course months later and dissolve the injunction after concluding the contracts in question functioned too much like a traditional sportsbook bet to escape state gaming law.

That inconsistency across circuits and even within the same court is precisely what makes Utah’s ruling significant beyond its own borders. Every new decision, whichever way it breaks, becomes ammunition for one side of the argument as the dispute inevitably works its way toward a higher court. Utah Attorney General Derek Brown framed Tuesday’s outcome as vindication for state authority, saying the ruling affirms that Utah’s anti-gambling laws are an appropriate way to protect residents and are not preempted by federal law. Kalshi, for its part, maintains that multiple courts have already recognized prediction markets as falling under exclusive federal jurisdiction and says it plans to keep defending that position on appeal.

Utah’s win doesn’t resolve that broader split, but it adds another state-favorable data point at a moment when appellate courts are still working through conflicting rulings. Kalshi has signaled it isn’t backing down anywhere, and with an appeal already promised in Utah, the underlying question — who actually gets to regulate sports event contracts — is likely headed toward further appellate review or eventually the Supreme Court before it’s settled for good. In the meantime, bettors weighing whether prediction markets are legal in their state should expect the patchwork of rulings to keep shifting state by state, and anyone comparing platforms may also want to see how the two biggest players stack up in this Kalshi vs. Polymarket breakdown.