Wisconsin Sues Five Prediction Market Platforms, Alleging Unlicensed Gambling Activities

According to CoinDesk, Wisconsin Attorney General Josh Kaul filed a lawsuit on April 24 against Kalshi, Coinbase, Polymarket, Robinhood, and Crypto.com, accusing these platforms of operating unlicensed gambling businesses under the guise of “event contracts.” The complaint cites marketing language used by the platforms themselves—for instance, Kalshi’s claim to be “the first legal sports betting platform in the U.S.,” and Polymarket’s statement that users can “bet on the outcomes of future events”—to argue that such contracts constitute wagering under Wisconsin law. The state government further noted that the platforms’ business model—charging fees per transaction—is functionally identical to casinos’ commission-based revenue structure. At the heart of this case lies a jurisdictional dispute: whether prediction market contracts fall under federal regulation by the Commodity Futures Trading Commission (CFTC) or are subject to individual states’ gambling laws. Similar lawsuits have already been filed by multiple states, and this conflict is expected to ultimately be resolved by the U.S. Supreme Court.