The Commodity Futures Trading Commission (CFTC) has launched a series of federal lawsuits against Arizona, Connecticut, and Illinois, escalating an ongoing dispute over the regulation of prediction markets. The legal action, filed in coordination with the U.S. Department of Justice, marks a significant step in asserting federal oversight over these platforms and challenging state-level enforcement efforts.

The cases target actions taken by the three states against federally registered designated contract markets (DCMs), which facilitate trading in event-based contracts tied to outcomes such as elections, economic indicators, and sports events. According to the CFTC, these contracts fall under its exclusive jurisdiction as defined by the Commodity Exchange Act (CEA).

Federal Authority Versus State Enforcement

At the center of the dispute is a long-standing question about whether states can regulate or restrict prediction market platforms operating within their borders. The CFTC maintains that Congress established a unified national system for overseeing derivatives markets, leaving no room for conflicting state-level rules.

“Despite the CFTC’s clear and longstanding exclusive jurisdiction to regulate event contracts under the Commodity Exchange Act, various states have attempted to outlaw, regulate, or otherwise restrain the activities of DCMs that facilitate trading in lawful event contracts,” the agency stated.

CFTC Chair Michael S. Selig emphasized that the lawsuits respond directly to what he described as state overreach. “The CFTC will continue to safeguard its exclusive regulatory authority over these markets and defend market participants against overzealous state regulators,” said Selig. “This is not the first time states have tried to impose inconsistent and contrary obligations on market participants, but Congress specifically rejected such a fragmented patchwork of state regulations because it resulted in poorer consumer protection and increased risk of fraud and manipulation.”

The lawsuits name state officials including governors and attorneys general, along with regulatory bodies such as the Illinois Gaming Board. In Illinois, the case was filed in federal court in Chicago and challenges cease-and-desist orders issued to multiple prediction market companies.

Dispute Over Nature of Event Contracts

State regulators, particularly in Illinois, have argued that certain event contracts—especially those tied to sports outcomes—amount to unlicensed gambling. Authorities have sought to block platforms from offering such products unless they obtain state gaming licenses.

The CFTC disputes that classification. In its filings, the agency describes these instruments as derivatives, not wagers, and therefore subject to federal oversight. The agency argues that requiring compliance with state gaming laws interferes with the federal framework established under the CEA.

“Illinois’s attempt to shut down federally regulated DCMs (Derivative Contract Markets) intrudes on the exclusive federal scheme Congress designed to oversee national swaps markets,” the plaintiffs said in the court filing.

The complaint further states: “This comprehensive federal regulatory scheme preempts Illinois law as applied to event contracts traded on federally regulated exchanges.”

In addition to Illinois, Arizona and Connecticut also took enforcement actions, including cease-and-desist orders aimed at companies such as Kalshi, Polymarket, and Crypto.com. Arizona went further by filing criminal charges against Kalshi, making it the first state to do so.

“These states’ aggressive and overzealous attempts to overstep the CFTC have led to market uncertainty and risks destabilizing effects for market participants and our registrants,” Selig added.

Growing Legal and Regulatory Tensions

The lawsuits represent the first time a federal agency has directly challenged state regulators in court over prediction markets. They also signal a shift in the CFTC’s approach, as the agency had previously focused on actions against individual platforms rather than state governments.

The commission is seeking declaratory and injunctive relief that would prevent states from enforcing punitive measures against companies offering federally regulated event contracts. This move follows earlier involvement in related litigation, including an amicus brief filed in a case involving Crypto.com.

The broader landscape remains unsettled. Several states, including Nevada and Massachusetts, have already prevailed in legal disputes against prediction market operators. At the same time, companies like Kalshi continue to pursue multiple lawsuits against regulators across the country.

Additional scrutiny has emerged from allegations that some platforms allowed trading based on insider information, prompting a federal investigation and proposed legislation aimed at limiting such practices. Lawmakers in roughly a dozen states are also considering bills that could restrict or ban prediction markets altogether.

The CFTC has indicated that it plans to clarify regulatory boundaries through rulemaking. The agency recently issued an Advanced Notice of Proposed Rulemaking to address uncertainties surrounding event contracts and their treatment under existing laws.

While the outcome of these lawsuits remains uncertain, the legal battle underscores a broader clash between federal authority and state-level efforts to control emerging financial markets.