May 22, 2026
Washington and Nevada regulators' lawsuits accusing prediction markets Kalshi and Polymarket of violating state gambling laws can proceed in their respective state courts, a Ninth Circuit panel ruled Thursday, denying the companies' arguments that the actions raise federal questions and thus belong in federal court.
May 04, 2026
Three California tribes have asked a federal judge to stay their litigation seeking to stop prediction market platforms from conducting what they say is illegal gambling on their lands, saying they can wait until the Ninth Circuit rules on their appeal challenging a denied preliminary injunction.
April 21, 2026
A California federal judge on Tuesday ordered Golden State indigenous groups, KalshiEx Inc. and Robinhood to explain why their fight over allegedly illegal gambling shouldn't be paused pending the Ninth Circuit's decision in a case determining whether Nevada can enforce state gambling laws against prediction markets.
February 25, 2026
Prediction market Kalshi Inc. is pushing back against the efforts of three California indigenous groups in federal court to stifle its sports event contract activity in the state, arguing the Indian Gaming Regulatory Act does not authorize the tribes to regulate their activity.
November 10, 2025
A California federal judge declined to issue a preliminary injunction on Monday blocking prediction platform Kalshi and Robinhood from offering their sports event contracts that some Native American tribes allege constitute illegal gambling, saying they have not shown how the platforms are subject to a statute protecting tribal gaming.
November 05, 2025
Kalshi and Robinhood have told a California federal judge that Native American tribes in the state can't bring claims that the trading platforms ran a criminal racket and flouted laws protecting tribal gaming by offering their sports event contracts, since the wagers are ultimately overseen by federal commodity laws.
September 26, 2025
Trading platforms Kalshi and Robinhood urged a California federal judge to reject an injunction bid lodged by Native American tribes in California that would prevent the companies from offering sports betting contracts on tribal lands, arguing their federally authorized event contract businesses would suffer "substantial and irreparable harm."
September 05, 2025
Native American tribes in California are asking a federal court for an injunction that would prevent trading platform Kalshi from offering sports contracts on its lands, arguing Kalshi's advertising is illegal and detracts from the tribes' casinos.