Kalshi faces new state gambling law challenge over World Cup event contracts

Each new state filing erodes the federal preemption defense Kalshi and Polymarket have relied on. New York and Washington courts have already rejected it, and Michigan, Illinois, and New Mexico have live proceedings. This unnamed state adds another front before the Second Circuit hears Kalshi's appeal. For traders, contracts they bought under CFTC registration face voiding risk from state judges nationwide.

Legal budgets multiply with every additional defense. Geofencing decisions become sharper if the patchwork keeps growing. For Polymarket, the identical exposure means every Kalshi loss previews its own liability. A federal appellate win remains the only path to restore a single national standard, but that ruling may come too late to stop more states from filing first. August deadlines in Washington compress the window further.