Louisiana sues Kalshi, Robinhood, Polymarket and seven other prediction-market platforms
Attorney General Liz Murrill wants a restraining order against 10 platforms, weeks after Kalshi and Polymarket US sued her in federal court.
Louisiana Attorney General Liz Murrill said on Thursday, Nov. 12, 2026, that she had filed a lawsuit against 10 prediction-market platforms, The Block reported. The Block names them as Kalshi, Robinhood, Polymarket, ForecastEx, Crypto.com, Coinbase, Novig, Underdog, Gemini and ProphetX.
“For too long, they have violated our laws with impunity,” Murrill wrote in a post on X that The Block quoted. “No longer: I am seeking an immediate restraining order and an injunction to restore the rule of law in Louisiana.”
The Block’s report does not identify the court, the specific claims or any hearing date. As of about 5 p.m. ET on Thursday, the attorney general’s news page carried no release on the suit and no copy of the complaint.
By The Block’s count, Louisiana is the 11th state to sue one or more prediction markets, with Arkansas, Utah and Connecticut among the earlier ones. The desk covered Arkansas’s suit against Kalshi last week.
Robinhood responded the same day. “As we’ve previously shared, Robinhood’s event contracts are federally regulated by the CFTC and offered through Robinhood Derivatives, LLC, a CFTC-registered entity, allowing retail customers to access prediction markets in a safe, compliant, and regulated manner,” a spokesperson told The Block.
Kalshi sued first
Kalshi went to court first. On Oct. 23, KalshiEX LLC filed KalshiEX LLC v. Murrill in the U.S. District Court for the Western District of Louisiana. The defendants are Murrill, Gov. Jeff Landry, the Louisiana Gaming Control Board and its members, the State Police gaming enforcement division and other state officials. The complaint seeks declaratory and injunctive relief.
Kalshi argues that the Commodity Exchange Act gives the CFTC “exclusive jurisdiction” over event contracts traded on federally designated exchanges, and that the Supremacy Clause therefore bars Louisiana from enforcing its gambling and sports-wagering laws against it.
The complaint quotes a Dec. 5, 2025 advisory notice in which the Gaming Control Board declared that it “considers purported sporting event contracts and certain other event contracts as illegal gambling.” The notice added that illegal sports wagering “may occur whether the contract is listed on an exchange regulated by the Commodity Futures Trading Commission (‘CFTC’) or elsewhere.” The complaint also cites a March 12, 2026 article in The Advocate in which Murrill described prediction markets this way: “That’s gambling.”
Kalshi’s complaint also points to state enforcement tools that took effect on Aug. 1, 2026. As Kalshi describes them, the attorney general may sue for a temporary or permanent injunction, and courts may, on the attorney general’s application, order websites removed and associated bank and credit accounts frozen.
In the complaint, Kalshi wrote that unless Louisiana assured it would not begin an enforcement proceeding while a preliminary-injunction motion was pending, it would also ask for a temporary restraining order. On Nov. 12, Kalshi filed a motion for a preliminary injunction in the federal case, with a memorandum of law, declarations and exhibits among its attachments. As of Thursday evening, that filing was available only through PACER, not the free RECAP archive.
The Block reported that Kalshi sought an emergency temporary restraining order and quoted its filing: “Based on recent discussions with representatives of the state of Louisiana, Kalshi believes that the State will initiate an action against Kalshi in state court to restrict Kalshi from operating in Louisiana.”
Polymarket’s U.S. exchange is also in federal court against Murrill. QCX LLC, which the CFTC lists as doing business as Polymarket US, filed QCX LLC v. Murrill in the Eastern District of Louisiana on Oct. 27. Its docket shows only orders on motions for out-of-state lawyers to appear, on Nov. 10 and Nov. 12, with no substantive filing on Nov. 12.
What the suit changes
Kalshi is asking a federal judge to stop state enforcement, and Polymarket US has its own federal case pending. Murrill, for her part, says she is seeking a restraining order and an injunction. The Block’s report does not say which Polymarket entity Louisiana named. As of Thursday evening, Kalshi’s federal docket showed no ruling on its motion.
States have generally objected to sports betting in particular, arguing the platforms operate illegally and avoid taxes, while the platforms argue the CFTC should regulate them, The Block noted. Kalshi’s complaint lists CFTC lawsuits against nine states that sought to apply gambling laws to federally regulated exchanges, among them Arizona, Connecticut, Illinois and New York.
Kalshi’s own complaint cites contrary appeals-court authority on the underlying question: the Third Circuit sided with Kalshi against New Jersey, while the Sixth Circuit held that its contracts are not swaps and that federal law does not preempt Ohio or Tennessee gambling laws. The Second Circuit denied Kalshi and Coinbase injunctions against New York and Connecticut, and Missouri has countersued Novig, seeking to cut off its payments from state residents. The Block’s report does not say whether any of the 10 platforms has stopped offering contracts in Louisiana.
Our AI news desk researched and wrote this article, and software checked every factual sentence against the records it links to, following the WriterOps methodology. Report an error.