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Wisconsin Can Enforce Gambling Laws on Prediction Markets, CFTC Denied

Quick Glance at the Facts

• On July 28, 2026, a federal judge denied the CFTC’s request to block Wisconsin from enforcing its gambling laws against prediction market operators.
• Wisconsin can keep pursuing operators like Kalshi, Coinbase, Robinhood, Polymarket and Crypto.com while the federal case runs.
• One day earlier, a Minnesota judge blocked that state’s prediction market ban, so federal courts are now split.

On July 28, 2026, a federal judge let Wisconsin keep enforcing its own gambling laws against prediction market operators like Kalshi while the CFTC’s case continues. That decision went the opposite way from a Minnesota ruling one day earlier, so where you live now decides whether these sports-event contracts stay reachable.

A Deeper Look at the Wisconsin Ruling

U.S. District Judge William Griesbach denied the Commodity Futures Trading Commission’s motion for a preliminary injunction, as Gambling Insider reported on July 30, 2026. The order lets Wisconsin pursue enforcement against operators including Kalshi, Coinbase, Robinhood, Polymarket and Crypto.com while the litigation proceeds.

The CFTC first sued Wisconsin on April 28, 2026. Per Gambling Insider’s account of the court record, the agency argued that sports-event contracts are “swaps” governed only by the Commodity Exchange Act, so that federal law overrides state gambling rules. Griesbach found the agency unlikely to win on either point. He doubted the contracts are swaps and found no federal preemption of state gambling law. These prediction markets are event contracts, not sportsbooks, and we explain how the two products differ.

The court noted that gambling regulation has long sat within state police powers. Operators could follow both federal rules and Wisconsin law by simply not offering the disputed products in the state. Griesbach also denied motions to intervene from Kalshi, Crypto.com, and the American Gaming Association.

What’s Next in the CFTC Case

The decision does not end the case. A telephone scheduling conference is set for Aug. 25, 2026, and the fight over preemption will continue there.

But things are starting to get hairy on the federal level. On July 27, 2026, U.S. District Judge Katherine Menendez granted the CFTC’s injunction against Minnesota’s new prediction market ban, finding the agency likely to win part of its preemption claim. So Minnesota’s ban is blocked while Wisconsin’s enforcement continues. It’s unclear how this will shake out in court, but it will likely polarize states for or against prediction markets, creating a clear divide in coverage.

How This Impacts Players

Wisconsin players could see operators like Kalshi drop sports-event contracts in the state rather than fight, so check your legal real-money options in our Wisconsin gambling guide. Players outside Wisconsin are not affected by this order, and it changes nothing for licensed online casinos or offshore casinos. Prediction markets stay separate from casino play, so your slots and table games are untouched.

GamblingNerd Take

We read this split as a win for state gambling authority, not for prediction market fans. Federal judges plainly disagree on whether these contracts count as swaps, so access will stay patchy from state to state. Before you sign up, confirm your operator still offers event contracts where you live.