CFTC Sues Arkansas Over Its Kalshi Case

The US Commodity Futures Trading Commission said on 13 November 2026 that it has filed a lawsuit against Arkansas “to block the state’s attempts to halt event-contract trading and impose up to hundreds of millions of dollars in civil penalties on CFTC-registered exchanges.” The Commission said Arkansas is bringing a civil enforcement case against Kalshi in state court, and described Kalshi as a CFTC-designated contract market.

The CFTC’s release does not name a co-plaintiff or a federal filing date. According to The Block, in a report published on 13 November, the Department of Justice and the CFTC filed the federal case on Thursday, 12 November, in the US District Court for the Eastern District of Arkansas, against Arkansas Attorney General Tim Griffin. That filing date and the Justice Department’s role have not been checked against the court docket and are attributed here to the press account only.

The Commission said Arkansas’s efforts to obstruct CFTC-registered exchanges that it says are operating lawfully under the Commodity Exchange Act “are preempted by federal law.” Chairman Michael S. Selig said: “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.” He added: “The CFTC will continue to defend its sole jurisdiction over these federally regulated markets as granted by Congress under the Commodity Exchange Act, and the Commission will not let state interference thwart its regulatory efforts and destroy federally regulated markets.”

The CFTC said Arkansas is “the 11th state the CFTC has sued to vindicate federal sovereign interests.” It also said it has submitted amicus briefs “in four federal Courts of Appeal and one state Supreme Court.”

Arkansas sued Kalshi in state court in early November

The federal case sits on top of a state action that Griffin’s office announced on 4 November 2026. According to that Arkansas attorney general release, Griffin sued KalshiEX LLC and Kalshi Inc. under the Arkansas Deceptive Trade Practices Act, arguing that “Arkansas law is concerned with substance, not semantics,” and seeking “restitution, penalties, taxes, and injunctive relief.”

The CFTC’s 13 November statement frames that state case as an attempt to halt event-contract trading and to impose large civil penalties on federally registered exchanges. It does not itself set out the state’s legal theory in detail, and it does not say that a court has yet ruled on either the Arkansas complaint or the Commission’s preemption claim.

TSN has already covered the same preemption fight in other states, including the Commission’s earlier case in Utah. That Utah suit was described at the time as the tenth such action. The Arkansas announcement is consistent with the Commission’s own count that this is now the eleventh.

Nominees, market structure and sports contracts sit in the background

The lawsuit lands days after President Trump nominated four people to the SEC and the CFTC, including a vice chair for the Commission. Those are nominations only. The Senate has not confirmed them, and the nominations do not decide this case.

Kalshi’s wider market-structure story is also separate from the Arkansas pleadings. TSN recently reported that Kalshi has opened US single-stock perpetual futures trading. Earlier coverage set out how the NBA signed a CFTC integrity pact and named two preferred prediction markets. Those items show why event contracts have been under scrutiny from regulators, exchanges and sports bodies. They are not evidence, one way or the other, of how a federal judge in Arkansas will treat Griffin’s state case.

The Block’s account said the federal complaint argues that the state action would “intrude on the exclusive federal scheme.” That phrasing is from the press report, not from a docket-verified complaint quoted here.

The case is about who may police event contracts, not who has already won

The immediate dispute is jurisdictional. The CFTC says Congress gave it sole jurisdiction over these federally regulated markets under the Commodity Exchange Act, and that Arkansas’s state-court case against a designated contract market is preempted. Griffin’s office, in its 4 November release, treated the same activity as a matter of state consumer-protection and gambling law, and said Arkansas looks at substance rather than labels.

None of that is a ruling. The Commission has now said it has sued eleven states on this theory and has filed amicus briefs in several appellate courts, which shows the same argument is being tested in more than one forum. It does not show that those courts have settled the question, and the 13 November release does not recap the outcomes of the earlier suits.

A second caution is about the federal filing itself. The CFTC announced the lawsuit “today,” 13 November. The Block says the complaint was filed the day before, with the Justice Department as co-plaintiff, in the Eastern District of Arkansas. Both can be true: an announcement date is not always the same as a docket stamp. Until the filing is read on the docket, the co-plaintiff point and the 12 November date should be treated as press reporting, not as court-verified facts. For that reason this article does not use a case number circulated in some coverage.

A third caution is about Kalshi. Being a CFTC-designated contract market is the status the Commission is seeking to defend. It is not a finding that the Arkansas complaint is groundless, and it is not a finding that Kalshi has complied with every state rule Griffin has invoked. The federal suit asks a court to block the state’s attempt to halt the trading and to impose the penalties the Commission described. The state suit still seeks restitution, penalties, taxes and injunctive relief. Those claims have not been tried.

Readers should also keep the personnel story in its place. New CFTC nominations may eventually change who sits at the Commission. They do not, as of this filing, change the Commodity Exchange Act or resolve the Arkansas case.