CFTC interim rule on event contracts takes effect as court split deepens

Mike Selig did not wait for the Supreme Court. On Friday, the Commodity Futures Trading Commission issued an interim final rule drawing a line between casino-style gambling, which falls outside the agency's jurisdiction, and event contracts — sports, politics, weather — which the rule plants firmly inside it. A second, proposed rule would make the swap classification explicit. The comment period is thirty days.

The sequencing is deliberate. When the Supreme Court eventually takes up the question that thirty-nine attorneys general are now pressing it to answer, Selig will arrive with something most regulators in his position do not have: a rule already in force, not merely an argument about what the statute intended.

The practical effect of the interim rule is immediate. Kalshi and Polymarket operate today under a framework that treats their contracts as swaps, which means state gambling regulators cannot touch them — at least not without overturning federal policy rather than merely winning a lawsuit. That is a harder thing to do. Selig appears to understand the difference between a legal position and an administrative fact, and he has spent this week converting the former into the latter.

The states read this correctly. Their amicus briefs arrived at the Supreme Court the same week the rule dropped, which is less coincidence than pressure — thirty-nine attorneys general, the Cabazon Band of Cahuilla Indians, the International Association of Gaming Regulators, all arguing that the Third Circuit got it wrong when it called sports event contracts swaps, and that the Sixth and Ninth Circuits at least got closer. Three circuits, three different frameworks, one agency now issuing interim rules to settle the matter administratively before the court can settle it judicially.

The professional pattern here is one worth naming: a regulator under legal challenge does not typically accelerate rulemaking unless it believes the courts are unreliable. The CFTC has now seen two federal appellate decisions cut against its preemption theory. The interim rule is not a sign of confidence — it is a hedge.

There is a genuine market question buried in this, and the consensus answer is probably wrong. The prevailing read treats Supreme Court cert as the event that resolves everything, pricing the legal fight as one case with one answer. But the CFTC's rulemaking creates a second track. Even if the Court grants cert and rules against federal preemption, the states would then face a notice-and-comment rulemaking challenge rather than simply a litigation win. Administrative law gives the CFTC procedural shelter that a pure statutory interpretation fight would not. The path from a Supreme Court loss to actual state enforcement authority over Kalshi is longer than the current framing suggests.