Louisiana judge orders Kalshi, Polymarket, Coinbase to halt event contracts

A Louisiana state judge temporarily barred Kalshi, Polymarket U.S., Robinhood, Coinbase and other prediction-market operators from offering event contracts in the state, hours after Attorney General Liz Murrill sued them. The order also requires the firms to geofence Louisiana, despite the CFTC telling exchanges this month to drop such restrictions. For traders, it signals escalating state-versus-federal friction over prediction markets, a regulatory overhang for Coinbase and other listed platforms expanding into event contracts.