Justice Department and CFTC Sue Arkansas Attorney General Over Kalshi

The U.S. Department of Justice (DOJ) and Commodity Futures Trading Commission (CFTC) filed a lawsuit Thursday against Arkansas Attorney General Tim Griffin, challenging state enforcement targeting Kalshi, a prediction-market platform. The filing seeks to block future state actions against prediction markets regulated by the CFTC. The complaint places the Arkansas action within a broader dispute over which level of government can enforce rules for prediction markets under federal oversight. Griffin is the state official named in the suit, while Kalshi is the platform targeted by Arkansas enforcement.