Tribes Prevail in Kalshi Gaming Rights Appeal
Ninth Circuit rules sports-event contracts constitute gaming under tribal sovereignty laws
1Appeals court reversal
The Ninth Circuit unanimously overturned a lower court's denial of preliminary injunction against Kalshi's sports-event contracts on tribal lands. The panel determined these contracts qualify as gaming under the Indian Gaming Regulatory Act (IGRA), contradicting the district court's classification as federally regulated derivatives. This sends the case back for reconsideration of injunction factors, prolonging the legal battle that began with the tribes' 2025 lawsuit against Kalshi and Robinhood.
2Tribal sovereignty claim
The two Me-Wuk tribes operate casinos under tribal-state compacts granting exclusive gaming rights within their territories. They argued Kalshi's prediction markets violated these sovereign rights. The appellate court agreed the tribes demonstrated likelihood of success on claims that Kalshi's products breached both IGRA and tribal gaming ordinances. This establishes important precedent for how digital gaming products interact with tribal jurisdiction.
3Legal classification battle
The district court had initially sided with Kalshi's argument that its contracts were derivatives under the Commodity Exchange Act, not gambling products. The Ninth Circuit rejected this framing, emphasizing the functional similarity between Kalshi's 'sports betting' contracts and traditional wagers. This distinction determines whether state/tribal or federal regulations apply to such prediction markets.
4Broader industry implications
Legal experts suggest the ruling provides a roadmap for other tribes to challenge Kalshi's model nationwide. Gaming attorney Daniel Wallach predicts potential geofencing of tribal reservations from Kalshi's platform and additional lawsuits. The decision comes weeks after a separate Ninth Circuit ruling subjected Kalshi to Nevada gaming oversight, indicating growing regulatory scrutiny.
5Kalshi's defense strategy
Kalshi's legal position hinged on the Unlawful Internet Gambling Enforcement Act not covering event contracts, which the appellate panel rejected. The company also unsuccessfully argued its advertising constituted nonactionable opinion about product legality. These defenses failed to convince the court that tribal gaming laws shouldn't apply to their prediction markets.
6Procedural next steps
The district court must now reevaluate preliminary injunction factors like irreparable harm and public interest. Kalshi faces the decision whether to appeal further as the case returns to lower court. The Picayune Rancheria's August 2025 withdrawal from the lawsuit leaves two tribes pursuing the injunction.
7Tribal legal victory
Attorney Scott Crowell called the ruling significant for tribal rights during an Indian Gaming Association webinar. The decision reinforces tribes' ability to enforce gaming exclusivity against emerging digital platforms. It particularly impacts California's 109 federally recognized tribes with gaming compacts, potentially reshaping how prediction markets operate near reservations.
8Regulatory crossroads
The case highlights tension between financial derivatives regulation and gaming laws in digital markets. As prediction platforms blur these boundaries, the Ninth Circuit's IGRA interpretation sets precedent for future conflicts between tribal sovereignty and fintech innovation. The outcome could influence whether similar platforms face tribal challenges or preemptively adjust operations.
Original article: ReadWrite — Tribes Prevail in Kalshi Gaming Rights Appeal