Overview
Polymarket US followed Kalshi into court against Louisiana four days later, in a different district. On October 27, 2026 QCX LLC, which does business as Polymarket US, sued the Attorney General, the head of her Gaming Division and the members of the Gaming Control Board in the Eastern District of Louisiana. Like Kalshi, it points to the Board’s December 5, 2025 advisory notice calling sports event contracts illegal gambling. Louisiana has not sued or fined it.
It pleads two counts: preemption by the Commodity Exchange Act, and a violation of the Commerce Clause. The Commerce Clause count, which Kalshi’s complaint does not raise, says Louisiana’s sports-wagering licenses are capped at twenty, go first to in-state casinos, riverboats and racetracks, and require servers in Louisiana and in-state-only customers, so a national exchange could not hold one. It asks for a declaration and preliminary and permanent injunctions against enforcement of Louisiana’s gaming, fantasy-sports and sports-wagering laws. It makes a similar Commerce Clause argument in its Ohio suit. (Caption, court, docket and filing date read from the file-stamped complaint.)