Federal Judge Halts Minnesota’s Historic Prediction Market Ban

Federal Judge Halts Minnesota’s Historic Prediction Market Ban

Federal Judge Katherine Menendez issued a preliminary injunction on Monday blocking Minnesota from enforcing SF 3432, marking a critical setback for what would have been the nation’s first state law to criminalize prediction markets. The order arrived just days before Saturday’s scheduled enforcement date. Kalshi, Polymarket, and the Commodity Futures Trading Commission jointly challenged the legislation, and Menendez found all three plaintiffs likely to succeed on federal preemption arguments. She concluded the platforms would face irreparable harm if the restrictive law proceeded as written.

The 44-page order specifically prohibits Minnesota from enforcing the statute against prediction market exchanges registered with the CFTC as designated contract markets, effectively preserving the current regulatory status quo while the underlying case proceeds through the courts.

The Technical Distinction: What Counts as a Swap

Menendez’s decision hinged on a precise legal question: whether prediction market contracts qualify as “swaps” under the Commodity Exchange Act, the federal framework governing derivatives trading. This technical distinction proved decisive in her reasoning. The judge found that certain prediction contracts—including those predicting Senate election outcomes, World Cup tournament winners, or geopolitical events like the reopening of the Strait of Hormuz—do satisfy this definition because they involve events with demonstrable economic, financial, or commercial consequences to market participants.

However, other Kalshi markets fall into a different category. Predictions about Love Island USA winners or statements announcers make during sports broadcasts likely do not meet the swap threshold under federal law, according to the judge’s analysis. This split became particularly significant because the CFTC structured its legal challenge as “facial,” requiring proof that the law could never be constitutionally applied in any conceivable context.

Recognizing this doctrinal complexity, Menendez found the statute “may not be preempted in all its applications” yet granted the injunction anyway to maintain the existing regulatory landscape pending final resolution. She pointedly criticized both sides for treating the dispute as an “all-or-nothing” matter when a more nuanced outcome seemed likely. Permanent relief for the platforms, she wrote, “may be much narrower” than the current preliminary injunction.

Escalating Regulatory Conflict Across States

Minnesota Attorney General Keith Ellison publicly disagreed with the court’s analysis, characterizing the preliminary injunction as enabling “predatory gambling apps to proliferate” unchecked. His office maintained that prediction market platforms could comply with all applicable federal requirements while still restricting their product offerings and market listings specifically within Minnesota’s borders.

The clash extends far beyond Minnesota. The CFTC has pursued legal action against multiple states seeking to restrict or ban prediction markets, including Illinois, Arizona, Connecticut, and Wisconsin. In Minnesota specifically, federal regulators and the Department of Justice filed suit within hours of the bill’s enactment. Kalshi pursued its own challenge days afterward.

The CFTC had established a Tuesday deadline for Menendez’s ruling, stating it would treat an adverse or late decision as “constructively denied” and escalate immediately to the Eighth Circuit Court of Appeals. Kalshi and Polymarket announced identical escalation plans.

This regulatory showdown matters for the broader crypto ecosystem because it demonstrates federal courts’ growing willingness to preempt state-level restrictions on decentralized financial infrastructure, potentially clearing the regulatory path for wider adoption of on-chain prediction markets, decentralized derivatives, and similar permissionless financial applications.

Source: Decrypt. Not financial advice.