The National Football League (NFL) has formally entered a legal dispute between the prediction market platform Kalshi and state regulators. In an amicus brief filed on Thursday, the league urged the Supreme Court to take up the case, which centers on the question of whether prediction markets should be classified and regulated as gambling operations.

At the heart of the issue is the regulatory authority over platforms that allow users to bet on the outcomes of real-world events, including political elections and sports. The NFL argues that these platforms function similarly to sportsbooks and should therefore be subject to state gambling laws rather than operating under a different regulatory framework. The league’s involvement highlights the growing tension between emerging financial technology platforms and established sports and gaming industries. While the NFL maintains that state oversight is necessary to ensure consumer protection and regulatory consistency, the case poses broader questions about how federal agencies and state governments should categorize and oversee digital prediction markets. The Supreme Court has not yet indicated whether it will grant the petition to hear the case, which could set a significant precedent for the future of online wagering and prediction-based financial products.