CFTC sues Arkansas to halt Tim Griffin’s Kalshi case and defend federal rule

The Commodity Futures Trading Commission sued the State of Arkansas in federal court on 13 November 2026 to stop Attorney General Tim Griffin’s state lawsuit against Kalshi and to bar Arkansas from pursuing enforcement against any other CFTC‑regulated exchange. The CFTC filed the complaint in the U.S. District Court for the Eastern District of Arkansas and announced the action on 14 November 2026; the U.S. Department of Justice joined the agency in the filing.

What the CFTC asks the court to do

The complaint requests an injunction preventing Arkansas from enforcing state laws against CFTC‑regulated entities, their affiliates and partners. The agency uses two statutory and regulatory claims: that state enforcement would be preempted as applied to event contracts traded on designated contract markets (DCMs), and that Arkansas would be forcing DCMs to violate the CFTC’s recent impartial access interpretation and interim rule.

The CFTC’s complaint relies on its guidance that DCMs must drop geographic restrictions within 30 days or explain why they cannot, and on the interim rule published in October 2026 that excludes state‑licensed sportsbook and casino wagers from the federal “swap” definition. The agency argues Arkansas’s case would compel exchanges to deny event contracts to Arkansas and so conflict with federal requirements.

Why Arkansas sued Kalshi

Attorney General Tim Griffin filed a state‑court suit against Kalshi the week before the federal complaint, accusing the platform of operating an unlicensed gambling operation. Griffin’s complaint leans mainly on the Arkansas Deceptive Trade Practices Act (ADTPA) and a common‑law unjust enrichment claim rather than on the state gambling code.

Griffin alleges thousands of Arkansas residents, including people under 21, traded on Kalshi, and that Kalshi did not pay sales or use taxes. He wrote in October 2025 that sports event contracts are gambling requiring a license and said, “The fact that a company has rebranded this gambling activity as a ‘prediction market’ does not protect it from scrutiny.” Griffin also pointed to Kalshi’s self‑exclusion tools, deposit limits and partnership with the National Council on Problem Gambling as evidence that “its actions speak louder than its labels.”

Penalties and the CFTC’s arithmetic

The CFTC’s filing quantifies the potential exposure under Arkansas law. The ADTPA allows civil penalties of up to $10,000 per violation. Kalshi’s fees on most markets range between $0.07 and $2.63 per 100 contracts, the complaint says. The CFTC warns that penalties assessed per violation “would dwarf Kalshi’s income from its activities in Arkansas and could reach the hundreds of millions of dollars.”

The agency frames that calculation to illustrate how state enforcement could impose outcomes inconsistent with federal regulation of DCMs.

Litigation spreading along the Mississippi River and beyond

Arkansas is the 11th state the CFTC has sued in its campaign to protect federal authority over prediction markets. The same week the CFTC filed in Arkansas, Louisiana Attorney General Liz Murrill sued 10 operators; a judge issued a temporary restraining order the same day barring those companies from offering event contracts in Louisiana. Missouri is also engaged in litigation with multiple operators.

Other operators have responded to Arkansas actions. Sweepstakes operator VGW was sued earlier in the month by Griffin. Polymarket and Crypto.com’s OG.com filed suit against Griffin and seven members of the Arkansas Racing Commission, citing the Kalshi complaint as evidence the state would next target them.

The circuit split and why the Eighth Circuit matters

The federal filing places the dispute into the Eighth Circuit Court of Appeals, which has not yet resolved the preemption question. District courts in the circuit have reached opposing outcomes: a Minnesota judge granted the federal government a preliminary injunction in July 2026, while U.S. District Judge Stephen Locher in Iowa denied Kalshi an injunction in September 2026, finding Kalshi unlikely to prevail on preemption.

Across other circuits, rulings are mixed and largely favour states. The Sixth Circuit sided with Ohio and Tennessee, the Ninth Circuit sided with Nevada, and the Second Circuit upheld injunction denials in New York and Connecticut. The Ninth Circuit also denied Kalshi rehearing en banc. The Third Circuit remains the only federal appeals court to rule in Kalshi’s favour. Separately, Robinhood and Crypto.com have sought Supreme Court review in related matters, and New Jersey’s request for U.S. Supreme Court review is pending.

“As prediction markets continue to prove their value in being useful for risk management and providing the public with valuable information about the future, Arkansas seeks to shut down event contracts ranging from sports and politics to other important world events,” CFTC Chairman Michael Selig said in the agency’s announcement.

The complaint is the first the CFTC has filed against a state since issuing its impartial access interpretation earlier in November 2026, and it signals the agency will use that interpretation and the October interim rule to shield federally regulated markets from state enforcement.

What to watch next

The federal court in the Eastern District of Arkansas will decide whether to enjoin Griffin’s state action and to bar Arkansas from pursuing enforcement against DCMs and related entities. If the court grants relief, the case will advance the preemption question into the Eighth Circuit, where divergent district decisions make appellate review likely. The litigation track in Louisiana and Missouri will proceed in parallel and could produce additional conflicting rulings.