The federal Commodity Futures Trading Commission has filed suit against Minnesota to stop a state law that would criminalize prediction market operations as felonies, setting up a major constitutional showdown over state versus federal authority in financial regulation.

Federal Regulators Challenge State Authority

The CFTC filed its lawsuit seeking a preliminary injunction to prevent the Minnesota law from taking effect on August 1, 2026. The commission described the legislation as the most aggressive attempt by any state to shut down federally regulated markets and undermine the regulatory framework Congress established over five decades ago. The law’s scope extends beyond previous state challenges, including provisions that would criminalize weather-related event contracts used by farmers across the state.

CFTC Chairman Michael S. Selig criticized Governor Walz directly, stating the law would transform users of prediction markets into felons overnight. Selig argued that Minnesota farmers have relied on critical hedging products related to weather and crop events for decades to manage their financial risks. He accused the governor of prioritizing special interests over American farmers and innovators, emphasizing the threat to established agricultural risk management practices.

Controversy Behind The Ban

Minnesota lawmakers who supported the ban argued that prediction markets represent an unregulated form of gambling that could encourage insider trading behavior. Recent scandals have fueled these concerns, including nine connected accounts on Polymarket that earned nearly 2.5 million dollars betting on specific U.S. military actions, such as exact strike dates against Iran and ceasefire announcements. Federal prosecutors charged a soldier with using insider information to bet on the capture of Venezuelan leader Nicolas Maduro, a mission the soldier helped plan.

The controversy deepened after Kalshi, another prediction market platform, banned a Minnesota lawmaker for betting on his own primary election victory. These incidents highlight the potential for abuse that concerns state legislators, who view the platforms as creating dangerous incentives for those with access to confidential information.

Agricultural Impact At Stake

Minnesota ranks among the largest agricultural producers in the United States, making the law’s impact on farming communities particularly significant. The CFTC emphasized that Minnesota farmers have long used weather and crop-related contracts as essential financial tools. These instruments allow agricultural producers to hedge against unpredictable conditions that could devastate their operations. The federal agency argues that criminalizing these established risk management practices threatens the economic stability of family farms that depend on commodity futures markets to protect their livelihoods from weather volatility and market fluctuations.