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Federal judge’s decision opens door for Utah officials to take action against Kalshi

Legal Writer

Publish Date: Aug 05, 2026

Fact checked by: Matt Moreno

Key Points

US District Judge Robert J. Shelby denied Kalshi’s request for protection against Utah officials
Lawsuit followed comments from Utah Gov. Spencer Cox regarding Kalshi’s prediction market exchange
Utah’s strict anti-gambling laws could form basis for future enforcement actions

Kalshi’s attempt to preemptively block Utah officials from trying to enforce the state’s gambling laws against event contract trading has failed, with a federal court ruling against Kalshi in the lawsuit. Kalshi has appeal options but the decision opens the door for Utah law enforcement to take action, should they decide to do so.

To date, the only signs that suggest Utah’s government might enforce its anti-gambling laws in this fashion have been a string of comments from Gov. Spencer Cox. The Cox administration may have been waiting to see how Kalshi’s lawsuit would play out, though.

(Photo illustration by Cheng Xin/Getty Images)

Federal judge finds in Utah’s favor in Kalshi lawsuit

United States District Judge Robert J. Shelby issued his decision in Kalshi v. Cox et al. on Tuesday regarding Kalshi’s petition for the court to enjoin Cox and people in his administration from trying to enforce Utah law against Kalshi’s prediction market exchange. Kalshi had argued that any attempt to do so by Utah officials violates the U.S. Constitution’s supremacy clause.

However, Shelby found that federal law does not preempt Utah from enforcing its gambling laws.

“State regulation of its gambling laws does not prevent the CFTC from serving the public interest in regulating derivatives markets, preventing price manipulation, ensuring financial integrity, protecting market participants, and promoting innovations. Kalshi has not met its burden of showing otherwise.Accordingly, the court concludes State regulation of its gambling laws does not frustrate the CEA’s purpose.”

Utah’s victory in this lawsuit is noteworthy because while rulings in most other disputes between prediction market exchange operators and state governments have merely involved requests for preliminary injunctions, Shelby’s decision is a ruling on the merits of the case. That raises the stakes for an appeal and should give Utah officials additional confidence if they decide to move forward with actions that Cox has discussed.

Cox’s comments could become more than threats now

Kalshi filed its lawsuit in February after Cox made public comments referring to Kalshi and other prediction market exchanges as “gambling-pure and simple.” Cox continued to state that he would “use every resource within my disposal as governor of the sovereign state of Utah” to disrupt event contract trading in the state.

Utah is bereft of legal gambling in most forms, only permitting charity raffles under certain circumstances. The state’s Constitution reserves the power to expand legal gambling for the people.

Kalshi has not yet signaled whether it will appeal Shelby’s ruling to the U.S. 10th Circuit Court of Appeals. If it does so, that appeal is likely to include a request for a preliminary injunction against law enforcement in Utah.

Barring the 10th Circuit granting that request in the near future, Shelby’s decision means that law enforcement in Utah can start to determine whether pursuing civil or criminal charges are appropriate. The scope could be grander than just Kalshi.

Gambling law enforcement against prediction market exchanges in Utah could take many forms

While Kalshi is the only exchange operator to try to preemptively block law enforcement actions in Utah, Utah law enforcement may target other operators in addition to Kalshi. Shelby’s ruling effectively clears the way for Utah to decide the scope of any action.

One thing that seems a foregone conclusion is that any litigation will begin in Utah state courts. The defendants may try to remove the matter to state court in order to negate the perception of a “home field advantage” that would exist in state court.

Utah Attorney General Derek Brown will also face decisions on whether to pursue civil litigation against exchange operators, bring forward criminal charges, or both. Most state actions against operators have been of the civil variety to date.

Due to Shelby’s decision, those conversations may be taking place internally in the Cox administration at this time. At minimum, Kalshi has suffered an important first loss on the merits of a case over whether federal law preempts state gambling law enforcement.

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