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.
April 01, 2026
Robinhood has launched a federal lawsuit seeking to shield itself from potential Washington state enforcement action over its prediction market offerings in the wake of Attorney General Nick Brown's Friday announcement that he's going after Kalshi for allegedly breaking Evergreen State gambling laws.