CFTC Sues Minnesota Over Prediction Markets Ban
The U.S. Commodity Futures Trading Commission (CFTC) has filed a lawsuit against the state of Minnesota, escalating its legal efforts to assert exclusive federal jurisdiction over prediction markets. The suit targets Minnesota's recent legislation, Senate File 4760, which bans the operation and facilitation of prediction markets within the state. Signed by Governor Tim Walz on May 18, the law is set to take effect on August 1 and claims event contracts on platforms like Kalshi and Polymarket constitute illegal wagers.
In its filing with the U.S. District Court for the District of Minnesota, the CFTC argued that the new law directly conflicts with federal authority under the Commodity Exchange Act (CEA). "If permitted to go into effect, Minnesota law will criminalize exchanges that the Commission has expressly approved," the lawsuit states, emphasizing that prediction markets offering event contracts are federally regulated as swaps. The agency is seeking both preliminary and permanent injunctions to block the law.
Federal vs. State: A Growing Battle
This lawsuit is the latest salvo in the CFTC's broader campaign to defend its jurisdiction over prediction markets. In April 2026, the agency won key rulings from federal courts in New Jersey and Arizona, affirming that state gambling laws cannot apply to federally regulated event contracts. Chairman Michael Selig, appointed in October 2025, has made clear that the agency will aggressively challenge state-level encroachments. "Federal preemption is not optional," Selig has asserted in prior public statements.
Prediction markets, which allow users to trade contracts tied to real-world events such as elections, weather, or sports, have gained traction as a financial instrument. Platforms like Kalshi, registered with the CFTC as Designated Contract Markets (DCMs), are subject to federal oversight, including anti-manipulation and anti-fraud regulations. The CFTC first recognized event contracts in 1992, and their legal classification as derivatives has been a cornerstone of the agency's regulatory framework.
Implications for Crypto and Beyond
Minnesota's prediction markets ban is part of a broader state-level push to regulate or restrict emerging financial technologies. Earlier this month, the state also banned crypto ATMs and passed legislation enabling local banks to provide virtual currency custody services, effective August 1. While states cite concerns over fraud and consumer protection, the CFTC and market participants argue that patchwork regulation undermines federally regulated markets and the constitution's Supremacy Clause.
A spokesperson for Kalshi called Minnesota's ban "unenforceable" and a violation of federal law. Polymarket has not yet commented. Meanwhile, Congress is reportedly considering legislative guardrails to address insider trading and market manipulation risks specific to prediction markets, which have seen rapid growth driven by sports-related contracts.
What’s Next?
The Minnesota case could set a significant precedent. If the courts side with the CFTC, it would reinforce federal preemption and provide clarity for prediction market operators nationwide. However, if Minnesota’s law is upheld, it could embolden other states to pass similar restrictions, potentially fracturing the regulatory environment.
With ongoing litigation across multiple circuits, including similar complaints in New York and Wisconsin, the issue may ultimately reach the U.S. Supreme Court. For traders and platforms alike, the stakes are high: the outcome will shape not just the future of prediction markets but the broader question of state versus federal authority in regulating financial innovation.