Wisconsin Sues Prediction Markets, Escalating State Fight Over Sports Event Contracts
Wisconsin’s Department of Justice has sued Kalshi, Polymarket, Coinbase, Robinhood, Crypto.com and affiliated entities, alleging that sports-related event contracts amount to illegal sports betting under state law. The complaints, filed in Dane County circuit court, seek to stop the platforms from offering what Attorney General Josh Kaul described as unlawful commercial gambling in Wisconsin.