CFTC Wins Order Blocking Arizona Criminal Case Against Prediction Market Kalshi

A federal judge handed the Commodity Futures Trading Commission a decisive early victory Friday, issuing a temporary restraining order that blocks Arizona from proceeding with the first criminal prosecution ever brought against a CFTC-registered prediction market operator.

U.S. District Judge Michael Liburdi issued the order following a nearly two-hour hearing in Phoenix, finding that the CFTC had made "a clear showing that it is likely to succeed on the merits of its claim that Arizona's gambling laws are preempted by the Commodity Exchange Act." A temporary restraining order is an emergency judicial brake, typically lasting days or weeks, that freezes the challenged action while a court decides whether a longer injunction is warranted. Here, it specifically prevents Arizona from proceeding with a criminal arraignment of Kalshi that had been scheduled for Monday, April 13, and remains in effect through April 24. The Arizona Attorney General's Office said it will inform the court Monday that it will not move forward with the case while the order stands.

Arizona Attorney General Kris Mayes had filed 20 criminal misdemeanor counts against KalshiEx LLC and Kalshi Trading LLC on March 17, charging the company with operating an illegal gambling business without a state license and facilitating wagers on Arizona events, including the 2026 governor's race. "Kalshi may brand itself as a prediction market, but what it's actually doing is running an illegal gambling operation and taking bets on Arizona elections, both of which violate Arizona law," Mayes said. "No company gets to decide for itself which laws to follow."

Those charges put a spotlight on a platform that, until recently, occupied uncertain legal territory. Kalshi was approved by the CFTC in 2020 as the first Designated Contract Market for event contracts in U.S. history. The company structures its products as federally regulated financial derivatives rather than traditional sports bets, letting users trade on the outcomes of elections, sports contests, economic data releases, and weather events. Following a $300 million Series D funding round, Kalshi carries a $5 billion valuation.

The CFTC, backed by the U.S. Department of Justice and the Trump administration, escalated its response to state pushback on April 2, filing lawsuits against Arizona, Connecticut, and Illinois seeking declaratory judgments that the Commodity Exchange Act gives the agency exclusive authority over event contracts. CFTC Chairman Michael S. Selig characterized Arizona's prosecution as a "dangerous precedent" and argued that "Arizona's decision to weaponize preempted state criminal law against companies that comply with a comprehensive federal regime cannot stand." Selig added that Congress had "specifically rejected such a fragmented patchwork of state regulations because it resulted in poorer consumer protection and increased risk of fraud and manipulation." For consumers, a federal win would mean uniform protections and disclosures governed by the CFTC; a state win could mean Kalshi users in Arizona, Connecticut, or Illinois face restrictions unavailable to users in neighboring states.

Federal courts have split sharply on the underlying question. The U.S. Court of Appeals for the Third Circuit ruled on April 6 that federal law preempts state gambling statutes, a significant win for the CFTC's position. The Ninth Circuit reached the opposite conclusion, allowing Nevada to maintain its ban on Kalshi. That circuit split has elevated the dispute to a prime candidate for Supreme Court review, a prospect CFTC leadership has signaled it views as nearly inevitable. Kalshi has already sued 10 state regulators, while facing lawsuits from eight states and two tribal governments, underscoring the fragmented battlefield the industry currently navigates.

The TRO expires April 24, at which point Judge Liburdi may take up a longer-term preliminary injunction. How the parallel CFTC cases against Connecticut and Illinois develop alongside the Arizona proceeding will determine whether prediction markets, and the billions of dollars now flowing through them, ultimately operate under a single federal framework or a state-by-state patchwork modeled on the fractured landscape of sports betting law.