The Commodity Futures Trading Commission is prepared to defend its exclusive authority over derivatives markets at the highest level, with Chair Michael Selig pledging to take state challenges all the way to the Supreme Court. The commitment, made on October 30, 2026, lands in the middle of a legal campaign that has the federal regulator squaring off against a growing list of state governments over prediction markets.

"We're prepared to fight these challenges all the way up to the Supreme Court," Selig said.

A Federal Regulator Versus the States

The CFTC has launched legal actions against at least 10 states. The list includes Arizona, Connecticut, Illinois and Utah, and it has continued to grow: the first lawsuits were filed in April 2026, and by late October the tally had reached 10 federal cases.

At the core of the dispute are prediction markets and event contracts — products that let people trade on the outcome of real-world events, from elections to economic data releases. States have increasingly treated these products as gambling. Some have pursued enforcement actions, while others have moved legislation aimed at reining them in.

The CFTC sees the matter differently. Its position is that when these contracts trade on federally registered exchanges, Washington is in charge — not the state capitols. The dispute is therefore about more than a single product category: it is a test of which level of government sets the rules when state gambling law and federal derivatives law point in different directions.

The Legal Argument and the Scorecard So Far

The agency rests its case on the Commodity Exchange Act, specifically 7 U.S.C. § 2(a)(1)(A). Selig argues the law grants the CFTC exclusive jurisdiction over swaps and futures traded on designated contract markets, or DCMs — exchanges that have registered with and are supervised by the CFTC. In the agency's view, federal preemption should override conflicting state rules that target those venues.

Beyond its own lawsuits, the CFTC had filed amicus briefs in four federal appeals courts and one state supreme court as of late October 2026. Early rulings have leaned in the agency's favor: preliminary injunctions supporting the CFTC were granted in initial rulings in cases from Arizona and Illinois. A preliminary injunction is interim relief that preserves the status quo while a case proceeds rather than settling the jurisdictional question outright, so these wins are meaningful momentum but not a final verdict.

The platforms caught up in the litigation include Kalshi, Polymarket and Crypto.com/Nadex.

How We Got Here

Selig was sworn in on December 22, 2025, after being nominated by President Trump. Defending the agency's turf against state gambling laws quickly became an early priority of his tenure.

What It Means for Prediction Markets

The most immediate consequence is that the regulatory question will not be settled quickly. Selig's Supreme Court pledge suggests the agency is willing to see the fight through multiple rounds of appeals rather than accept a split outcome.

For platforms such as Kalshi, Polymarket and Crypto.com/Nadex, the stakes are, in practical terms, existential. A national framework would let them operate under a single rulebook. A loss for the CFTC, by contrast, could force them to navigate a different set of restrictions in each state that objects.

The early preliminary injunctions in Arizona and Illinois give the CFTC some momentum, and the appeals courts where the agency has filed amicus briefs will carry significant weight.

There is also a broader institutional question in play. If the CFTC's reading of the Commodity Exchange Act holds, it would confirm a wide scope for federal oversight of event contracts. If states prevail, it could invite more local intervention in products the agency considers its responsibility.

For now, the things to watch are rulings in the 10 federal cases, decisions in the appeals where the CFTC has weighed in, and whether any of these disputes produces a circuit split — conflicting rulings from different federal appeals courts on the same question of federal law, one of the classic reasons the Supreme Court agrees to hear a case.