New Jersey Seeks Supreme Court Ruling on State Authority Over Sports Betting Regulation

This case could redefine the balance of power between state and federal authorities in regulating a multi-billion-dollar industry.

• New Jersey filed a petition with the U.S. Supreme Court on September 2, 2026, challenging federal jurisdiction over sports betting on prediction markets.
• A circuit split emerged after conflicting rulings: the Third Circuit sided with Kalshi, while the Ninth Circuit supported Nevada's regulatory authority.
• The stakes are high, with sports betting revenue reaching $16.89 billion for U.S. states in 2025, excluding tribal casinos.

• The 2018 Murphy v. NCAA decision allowed states to legalize sports betting, leading to the rise of platforms like Kalshi that offer event contracts on sports outcomes.
• Kalshi claims its contracts are swaps under the Dodd-Frank Act, exempting them from state gambling laws, which has led to legal challenges across multiple states.
• Litigation is ongoing in at least 20 states, with a coalition of 38 states opposing federal preemption of state gambling laws.

The legal battle over sports betting regulation is intensifying as New Jersey's petition to the U.S. Supreme Court highlights a critical divide in how states and federal authorities interpret the law. Following the landmark 2018 Murphy v. NCAA ruling, which struck down the federal ban on sports betting, states have rushed to legalize and regulate this lucrative market. Platforms like Kalshi emerged, offering prediction markets that allow users to bet on the outcomes of sporting events. However, Kalshi has registered with the Commodity Futures Trading Commission (CFTC) as a designated contract market, arguing that its event contracts are swaps rather than traditional bets, thus falling under federal jurisdiction.

This assertion has sparked a series of legal challenges. The Third Circuit Court of Appeals ruled in favor of Kalshi, stating that New Jersey's gambling laws were preempted by federal authority over swaps. In contrast, the Ninth Circuit found that Nevada could enforce its gaming laws against Kalshi, determining that the platform's sports bets were misclassified as swaps. This circuit split has created a legal gray area, prompting New Jersey to seek clarity from the Supreme Court.

The implications of this case extend beyond legal definitions; they touch on the very nature of state authority and the future of sports betting in the U.S. If the Supreme Court sides with New Jersey, it could empower states to regulate sports betting more robustly, potentially leading to increased revenues and consumer protections. Conversely, a ruling favoring Kalshi could solidify federal control over sports betting, limiting state regulatory powers and potentially stifling local markets.

As litigation continues across the country, with dozens of suits pending and several states obtaining injunctions against Kalshi, the outcome of this Supreme Court petition is being closely monitored by market participants. The stakes are high, not just for New Jersey and Kalshi, but for the entire sports betting industry, which generated nearly $17 billion in revenue for U.S. states in 2025 alone. The resolution of this case could set a precedent that shapes the regulatory landscape for years to come.

• State regulators: They will need to adapt their laws based on the Supreme Court's ruling.
• Sports betting platforms: Companies like Kalshi may face operational changes depending on the outcome.
• Consumers: Bettors could see changes in the legality and availability of betting options in their states.

• Supreme Court timeline: Monitor when the Court will hear the case, as this will indicate how quickly the legal landscape may shift.
• State responses: Watch for how other states react to the petition and any new regulations they may propose in anticipation of the ruling.
• Market adjustments: Keep an eye on how sports betting platforms adjust their operations in response to ongoing litigation and potential rulings.