In a recent ruling, a federal judge in Arizona has granted a temporary restraining order, preventing the state from bringing criminal charges against Kalshi, a prediction market provider. This decision comes in response to a motion filed by the Commodity Futures Trading Commission. The judge's order, issued by District Judge Michael Liburdi, prohibits Arizona from proceeding with an arraignment of Kalshi that was scheduled for Monday, April 13.

The state had announced plans to file 20 criminal charges against Kalshi, alleging that the company's offerings violated Arizona law. However, the judge found that the Commodity Futures Trading Commission is likely to succeed in its claim that Arizona's gambling laws are preempted by federal law.

The temporary restraining order will remain in place for two weeks, and a pending motion for a preliminary injunction could potentially extend this period. The judge's decision was welcomed by the CFTC, with Chair Michael Selig stating that the regulator appreciates the court's ruling and views Arizona's actions as an attempt to intimidate companies that comply with federal law. The CFTC has argued that prediction markets, also known as event contracts, fall under its supervision and are subject to federal law, which preempts state law.

This case is part of a broader dispute between the CFTC and several states, including Arizona, regarding the regulation of prediction markets. The outcome of this case may have significant implications for the industry, as it could clarify the role of federal versus state law in regulating these markets.