CFTC interim final rule splits Polymarket's Ohio case in two

QCX LLC filed its complaint in Ohio's Southern District on October 16, naming Attorney General Andy Wilson and seven Casino Control Commission members as defendants. The timing was not incidental. Ohio had given prediction market operators until that date to comply with cease-and-desist orders issued October 2, and Polymarket chose to answer with a federal lawsuit rather than a state license application.

The Sixth Circuit's September 25 ruling is the wall Polymarket has to get around. That court held unanimously that Kalshi's sports event contracts were not swaps under the Commodity Exchange Act, and that federal preemption would not displace Ohio and Tennessee gambling law even if the contracts qualified. Polymarket's response to that ruling is not to distinguish it factually — it cannot, because the contracts are substantially similar — but to argue that the legal ground shifted after the opinion landed.

The CFTC's October 9 interim final rule is Polymarket's lever. The rule, effective October 19, excludes state-licensed sportsbook wagers and casino games from the swap definition, with comments due November 18. Polymarket's argument runs like this: the Commission has now spoken to the scope of the swap definition in a way the Sixth Circuit did not have before it, and that subsequent agency action reopens the preemption question the appellate court thought it had closed. Whether Judge Douglas Cole finds that argument persuasive enough to grant preliminary injunctive relief is the near-term question the case turns on.

I think that argument is weaker than the filing suggests, and here is the mechanism. The Sixth Circuit did not rest its holding on whether the contracts were swaps. It held that even if they were swaps, federal preemption would not follow. The October 9 rule speaks to swap classification. It does not speak to the preemption analysis the Sixth Circuit conducted under the CEA's savings clause. A rule that clarifies what is a swap does not disturb a court's conclusion about what happens when state law operates on a swap. Those are sequential questions, and the CFTC answered only the first one.

Polymarket's dormant Commerce Clause claims are the stronger half of the complaint. Ohio's Type A licensing structure requires in-state physical presence, caps proprietors at 25, and mandates Ohio-based wagering servers. Those requirements burden out-of-state operators in ways that facially favor Ohio businesses. Courts applying the Pike balancing test ask whether the burden imposed on interstate commerce is clearly excessive relative to the local interest served. A server location requirement that effectively bars federal licensees from operating nationally is not a self-evidently local interest. That claim does not depend on the Sixth Circuit's preemption holding and survives it intact.

The constitutional and preemption claims will now proceed on separate tracks before Judge Cole. A preliminary injunction motion requires Polymarket to show a likelihood of success on the merits of at least one of those theories. Under Pike, the Commerce Clause path is plausible. Under the Sixth Circuit, the CEA preemption path faces a circuit precedent directly on point.