Wisconsin AG Kaul sues Kalshi over event contracts
Wisconsin Attorney General Josh Kaul is taking legal action against prediction market platform Kalshi. The available reports do not specify the nature of Kaul's claims against Kalshi or how any recent supreme court ruling connects to the platform. Prediction markets are growing in popularity but their legal status remains unsettled.
Kaul's move adds Wisconsin to the stack of states piercing the preemption shield CFTC-registered platforms relied on. Kalshi already lost preemption fights in Ohio and Tennessee under the same gambling-framing theory, while Polymarket faces a parallel New York suit. Each state loss becomes precedent the next attorney general copies. Kalshi must now split legal resources across federal injunction fights, circuit appeals, and state court defense in Wisconsin.
The Seventh Circuit split with Illinois deepens the judicial chaos. Traders hold positions whose legality shifts with state borders, not registration. The first platform to lose another major state case becomes the template every competitor races to copy, forcing costly geofences before any federal rule or cert grant arrives. Kaul's supreme-court backing in Madison signals Wisconsin will litigate hard.
Wisconsin Attorney General Kaul joins Illinois, New York, Ohio, Tennessee, Nevada, and Michigan in the multi-state legal offensive against Kalshi and other CFTC-registered platforms, with the Seventh and Sixth Circuit splits now pressing toward a possible Supreme Court resolution.