Supreme Court asked to rule on state bans for Kalshi bets

Supreme Court urged to let states regulate sports bets on prediction markets after a circuit split raised the odds that it will rule on Kalshi’s fight against state bans. The request comes as lower courts have reached different conclusions on whether a state’s prohibition of sports‑betting contracts on Kalshi, a federally regulated prediction‑market exchange, violates the First Amendment or the Commerce Clause. The case could decide whether state governments can impose restrictions on a national platform that offers wagers on sporting outcomes.

Sports betting in the United States has expanded dramatically since the 2018 Supreme Court ruling that struck down the federal ban on state‑licensed sportsbooks. Kalshi, launched in 2020 and overseen by the Securities and Exchange Commission, allows users to buy and sell contracts that pay out based on the outcome of events, including sporting events. Several states have argued that allowing sports betting on Kalshi would undermine their regulatory frameworks, dilute consumer protections, and erode the revenue stream that comes from state‑licensed sportsbooks. Kalshi counters that its platform is subject to federal securities law and that state bans would create a patchwork of restrictions that stifle innovation.

The legal battle began when the Ninth Circuit ruled that a California law banning sports betting on Kalshi was unconstitutional, while the Eleventh Circuit upheld a similar ban in Alabama. Kalshi has filed a petition for certiorari, asking the Supreme Court to resolve the split. In its brief, the company argues that the federal securities framework provides sufficient consumer safeguards and that state bans interfere with interstate commerce. State officials, on the other hand, claim that the Supreme Court has a long history of allowing states to regulate gambling to protect residents and to maintain control over local betting markets. The court’s docket now includes the petition, and the decision could arrive as early as the next term.

If the Supreme Court sides with Kalshi, states would lose a tool to curb sports‑betting on prediction markets, potentially expanding the industry’s reach and increasing consumer exposure. A ruling in favor of the states would reinforce the idea that state governments retain the authority to regulate gambling even when the activity is conducted on a national platform. Either outcome will shape the future of sports betting, affect how states generate revenue, and determine the balance between federal securities regulation and state control over gambling. The legal fight is a bellwether for the broader debate over how new technology interacts with existing state‑level gambling laws.