Federal Judge Pauses Minnesota Prediction-Market Ban for Kalshi and Polymarket US
A July 27 injunction blocks Aug. 1 enforcement while the court weighs CEA preemption for some event contracts.
US District Judge Katherine Menendez issued a preliminary injunction on July 27 temporarily blocking Minnesota from enforcing its new prediction-market ban against Kalshi and Polymarket US. The order pauses the Aug. 1 crackdown while litigation proceeds over whether federal commodities law overrides the state statute for certain event contracts.
Key Takeaways
- A federal court order temporarily blocks Minnesota from enforcing its Aug. 1 prediction-market ban against Kalshi and Polymarket US.
- The judge found the platforms were likely to succeed, at least in part, on claims that the Commodity Exchange Act preempts the Minnesota statute.
- Minnesota’s law would have barred creating, operating, and advertising prediction markets and attached criminal penalties for supporting them.
- The injunction may not cover every product long-term because the court signaled not all listed event contracts were shown to meet the legal definition of a swap.
Judge Halts Minnesota’s Aug. 1 Prediction-Market Ban for Kalshi and Polymarket US
US District Judge Katherine Menendez granted preliminary injunctions that stop Minnesota from enforcing its new prediction-market ban against Kalshi and Polymarket US.
The immediate impact is operational. The injunction preserves the status quo and allows both platforms to continue operating in Minnesota while the case is litigated, rather than forcing an Aug. 1 shutdown or rapid product and marketing changes under threat of state enforcement.
For traders and liquidity providers, the near-term signal is straightforward: the state-by-state enforcement risk in Minnesota is reduced for these two plaintiffs, at least until the court reaches a fuller merits decision.
CEA Preemption and the Court’s Focus on Whether Event Contracts Are “Swaps”
The legal hinge in the July 27 order is federal preemption under the Commodity Exchange Act (CEA). Menendez found the plaintiffs were likely to succeed, at least in part, on the argument that the CEA overrides Minnesota’s attempt to regulate or prohibit certain prediction-market activity.
That preemption analysis is not abstract. The court’s reasoning turned on product classification and venue. Menendez said several event contracts offered by Kalshi and Polymarket US appeared to qualify as “swaps.” If a contract is a swap and the transactions occur on designated contract markets, the order indicates those transactions fall under the Commodity Futures Trading Commission’s exclusive jurisdiction.
In market-structure terms, this frames the dispute as a jurisdictional boundary fight: if the products are treated as CFTC-tethered derivatives, the state’s ability to box them out weakens materially. If they are not, the state’s leverage returns.
What the Minnesota Statute Would Have Changed: Operations, Ads, and Criminal Penalties
Minnesota’s law was scheduled to take effect Aug. 1. It would prohibit the creation, operation, and advertising of prediction markets, and it would impose criminal penalties for supporting them.
That scope matters because it targets more than just the matching engine. A ban that reaches “advertising” and “supporting” activity expands compliance and counterparty risk beyond the platform itself, pulling in affiliates, marketers, and potentially service providers that touch distribution.
The injunction blocks enforcement against Kalshi and Polymarket US for now, but it does not resolve the underlying question of how far Minnesota can go once the court reaches a final decision.
How Narrow Could the Injunction Get if Some Contracts Don’t Qualify as Swaps?
Menendez explicitly left room to narrow the relief. The order cautioned the injunction could eventually be tightened because the plaintiffs did not show that every event contract they listed meets the legal definition of a swap.
That caveat keeps operational certainty incomplete. The litigation can still evolve into a contract-by-contract sorting exercise, where some listings remain protected under a federal preemption theory and others become vulnerable to state restrictions.
Key forward signals are procedural rather than price-based: whether the court narrows the injunction based on specific contracts, whether later rulings expand or limit the current finding of likely success “at least in part,” and how Minnesota positions itself on Aug. 1 given enforcement is paused as to these plaintiffs. Traders should also watch for clarification on how the “designated contract market” condition affects which transactions are treated as within the CFTC’s exclusive jurisdiction.
This Ruling Tests Whether States Can Box Out CFTC-Tethered Event Contracts
I read this as a market-access ruling first and a policy ruling second. The injunction removes an immediate cliff risk in Minnesota for Kalshi and Polymarket US, which is exactly what a preliminary injunction is designed to do: keep the market functioning while the court decides the merits.
The threshold that matters is product classification. If the court ultimately treats a meaningful slice of these event contracts as swaps traded in a way that triggers CFTC-exclusive jurisdiction, the setup starts to look structural rather than narrative-driven. If the case devolves into narrow protection for a limited subset of contracts, the practical outcome is fragmented listings and renewed state-level friction where the swap argument does not cleanly apply.
