A federal judge in Arizona temporarily blocked state enforcement against Kalshi's event contracts until April 24. Judge Michael Liburdi granted a request from the CFTC and the federal government and said the agency is likely to succeed in arguing the contracts are swaps under the Commodity Exchange Act. The order bars Arizona officials from starting or continuing civil or criminal action tied to Kalshi contracts on CFTC-regulated markets. The court will decide whether to issue a longer-term preliminary injunction.