Financial Regulation and Derivatives

A federal judge has temporarily halted Arizona's criminal case against Kalshi, the prediction-market platform, effectively siding with the Commodity Futures Trading Commission's effort to assert exclusive federal jurisdiction over prediction markets. The ruling came as the CFTC has been actively filing federal complaints and pressing that states' attempts to regulate or prosecute market operators would create inconsistent rules; the commission's chairman even testified before a House panel this week as part of that broader push. The court's pause blocks Arizona's prosecution while the question of federal preemption is resolved, a development that reduces the immediate threat of fragmented state enforcement actions against Kalshi and similar platforms.