Federal judge Katherine Menendez blocks Minnesota's first-in-nation prediction markets ban, citing likely federal preemption and potential harm to operators
Michael S. SeligTim WalzJoe BidenKatherine MenendezKeith EllisonKalshiCommodity Futures Trading CommissionU.S. Commodity Futures Trading CommissionCFTCPolymarket

Federal judge Katherine Menendez blocks Minnesota's first-in-nation prediction markets ban, citing likely federal preemption and potential harm to operators

A federal judge has blocked Minnesota's first-in-the-nation ban on prediction markets, citing likely federal preemption and potential harm to operators. U.S. District Judge Katherine Menendez granted a preliminary injunction, allowing platforms like Kalshi and Polymarket to continue operating while legal challenges unfold.

MPR News MPR News+5 sources28 July 2026 · 05:14 UTC
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A federal judge has granted a preliminary injunction against Minnesota's ban on prediction markets, which was set to take effect on August 1. U.S. District Judge Katherine Menendez ruled that the law likely violates federal jurisdiction, allowing platforms like Kalshi and Polymarket to operate in the state.127

The Commodity Futures Trading Commission (CFTC) filed a lawsuit in May, arguing that the Minnesota law undermines federal regulations established over 50 years ago. Menendez noted that the plaintiffs demonstrated a likelihood of success in their claims, stating they would suffer irreparable harm if the ban were enforced.34

The Minnesota law, signed by Governor Tim Walz, categorizes prediction markets as gambling, thus embedding the ban in a public safety bill. However, Menendez highlighted that the law may not be entirely preempted, suggesting that some applications could still be valid.8

In her ruling, Menendez emphasized that the CFTC has exclusive jurisdiction over event contracts, which include various topics such as sports and weather. The CFTC's Chairman, Michael S. Selig, criticized the law, stating it would criminalize lawful operators overnight. Meanwhile, Minnesota Attorney General Keith Ellison expressed disagreement with the ruling and plans to continue defending the state's law.

Kalshi and Polymarket welcomed the ruling, which allows them to maintain their operations in Minnesota while the litigation proceeds.

Key Insight
“Judge Menendez ruled that the plaintiffs, including the CFTC, demonstrated a likelihood of success in their claims against the ban, which was set to take effect on August 1. Minnesota Attorney General Keith Ellison expressed disagreement with the ruling and plans to continue defending the state's law, which characterizes prediction markets as gambling.”
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CuriousCats studied:
1
GizmodoGizmodo
“a preliminary injunction has now paused the law, preventing it from taking effect at the start of next month.”
Gizmodo →
2
5 EYEWITNESS NEWS5 EYEWITNESS NEWS
“On Monday, U.S. District Judge Katherine Menendez granted a preliminary injunction to the Commodity Futures Trading Commission (CFTC), Kalshi and Polymarket, at least temporarily blocking the law that would have gone into effect on Aug. 1.”
5 EYEWITNESS NEWS →
3
CBS NewsCBS News
“A federal judge has temporarily blocked Minnesota from enforcing its banning most bets on prediction markets, according to court documents filed on Monday.”
CBS News →
4
NBC NewsNBC News
“A federal judge granted a preliminary injunction pausing Minnesota’s first-of-its-kind prediction market ban Monday, days before it was slated to go into effect.”
NBC News →
5
ReutersReuters
“A federal judge on ​Monday blocked Minnesota from enforcing a newly enacted law that made the state the first nationally to ‌outright ban prediction markets like those run by Kalshi and Polymarket.”
Reuters →
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