A group of three California tribes contends that should a federal appellate court accept arguments from prediction platforms Kalshi and Robinhood, it would go against the intent of the Indian Gaming Regulatory Act (IGRA).
Blue Lake Rancheria, Chicken Ranch Rancheria of Me-Wuk Indians, and Picayune Rancheria of the Chukchansi Indians in July 2025 brought suit against the prediction platforms, claiming they are encroaching on tribal sovereignty and exclusivity by offering event contracts on reservations.
In California, tribes have exclusivity for Class II and III gaming under IGRA and through compacts with the state. Prediction markets are regulated by the federal Commodity Futures Trading Commission and are considered financial tools.
