The prediction markets legal fight has officially reached the Supreme Court. New Jersey filed a petition Wednesday asking the justices to review an appellate ruling that favored Kalshi and found federal law overrides the state's attempt to regulate its sports event contracts. If the Supreme Court accepts the case, it could finally answer one of the biggest questions hanging over prediction markets: does the CFTC have exclusive authority, or can individual states enforce their own laws?
There is no guarantee the justices will hear it. Still, New Jersey's request comes at an especially interesting time because two federal appeals courts have now reached different conclusions about Kalshi's legal argument. That disagreement gives the Supreme Court a much clearer reason to get involved.
Two Appeals Courts, Two Very Different Answers
The Third Circuit handed Kalshi a major victory in April, finding that its event contracts fall under federal regulation through the Commodity Futures Trading Commission. That ruling prevented New Jersey from enforcing its state laws against the exchange. Kalshi argues that operating a nationwide financial exchange would become extremely difficult if it had to satisfy 50 separate regulatory systems.
Things went differently out west. The Ninth Circuit ruled last week that sports-related event contracts were not swaps regulated exclusively by the CFTC, rejecting efforts by Kalshi and Crypto.com to block Nevada regulators. You now have two federal appellate courts looking at similar questions and arriving at conflicting answers.
The situation heading into the Supreme Court looks something like this:
- The Third Circuit sided with Kalshi in its New Jersey dispute
- The Ninth Circuit reached a different conclusion involving Nevada
- New Jersey has now petitioned the Supreme Court
- Other prediction market cases remain active in federal courts
- The Supreme Court has not yet agreed to hear the case
New Jersey Wants States to Keep Their Authority
New Jersey Attorney General Jennifer Davenport argues Congress never intended the Commodity Exchange Act to strip states of their traditional authority over sports-related activity. Her office is asking the Supreme Court to reverse the Third Circuit decision. New Jersey also has plenty of company, with officials from dozens of states challenging the industry's federal-only regulatory model.
Kalshi isn't backing away from its position. Spokeswoman Dani Lever said the exchange remains confident in the lower-court decisions supporting CFTC jurisdiction. From Kalshi's perspective, a national marketplace needs national rules, not a patchwork that changes whenever you cross a state line.
A Supreme Court Decision Could Reshape the Industry
The consequences extend well beyond one company operating in New Jersey. Kalshi and Polymarket U.S. are building nationwide platforms, while states are arguing they still have authority over certain contracts offered within their borders. A Supreme Court ruling could establish much clearer boundaries for everyone.
The timing remains uncertain. Bank of America said Monday that legal experts believe the Supreme Court could wait until next year because related cases remain unresolved elsewhere. If the justices accept New Jersey's petition sooner, however, a decision could potentially arrive by next summer.
The Trade Handle Prediction Markets Take
We've been watching the state-versus-federal question move through courts for months, and this feels like the natural destination. The Third and Ninth Circuits are now pointing in different directions, while prediction markets continue processing billions of dollars in weekly trading volume. Leaving that disagreement unresolved becomes increasingly difficult as the industry grows.
The biggest development today isn't that the Supreme Court has decided anything, because it hasn't. It's that the justices now have their first direct opportunity to address the issue. If they take New Jersey's case, the prediction market industry's most important legal question could finally get a nationwide answer.