Ninth Circuit splits Kalshi ruling as tribes win on IGRA grounds

Three judges on the Ninth Circuit handed California's Blue Lake Rancheria Indians and the Chicken Ranch Rancheria of Me-Wuk Indians a ruling last week that the prediction market industry cannot explain away with a press release. Judge Margaret McKeown, writing for a unanimous panel, found that the tribes were likely to succeed in arguing that Kalshi's sports-event contracts violated the Indian Gaming Regulatory Act — and that the district court below had been wrong to classify those contracts as federally regulated derivatives. The panel called them what any tribal gaming authority would call them: an act of placing a bet or wager.

That is the sentence Kalshi built its entire legal architecture to prevent anyone from writing.

The company's federal shield rests on a single structural argument: that event contracts are derivatives regulated under the Commodity Exchange Act, and the CEA preempts state and tribal gambling law by design. The CFTC blessed Kalshi's contracts. The district court agreed. Kalshi went to market on that basis. What the Ninth Circuit did was not resolve that argument — it found the tribes had raised enough of a counter-argument to survive to the next round — but the damage is in the framing, not the outcome. A unanimous appellate panel saying your product looks like a wager is a different regulatory environment than the one Kalshi was operating in on Monday.

The case now returns to the district court to work through the remaining claims. Kalshi is not required to pull its contracts from California in the interim. That matters operationally. It matters less strategically, because the question on the table has shifted: not whether Kalshi can operate, but whether IGRA gives tribes independent authority to exclude Kalshi from their lands regardless of what the CFTC permits. The Ninth Circuit thinks that argument has legs.

The consensus read in the industry is that this is a contained ruling — tribal sovereignty is a narrow carve-out, not a model that states can replicate. I don't think that holds. What the panel did is establish that the CEA's preemptive reach is not unlimited and that a separate federal framework — IGRA — can coexist with it and potentially override it within specific jurisdictions. If that logic survives remand and any subsequent appeal, it gives every state with substantial tribal gaming infrastructure a legitimate legal hook. California, Wisconsin, Oklahoma, Minnesota — these are not small markets.

The Picayune Rancheria of the Chukchansi Indians withdrew from the suit before the appeal. The two remaining tribes won. That asymmetry is worth tracking: what one tribe decides is survivable, another decides is worth fighting. That gap in appetite is information about how durable this coalition is, and how far the litigation is likely to travel.

Kalshi has argued in other venues that pushing users to offshore platforms is the real cost of state and tribal restrictions. That argument works in a Texas Senate hearing. It works less well against a federal appellate finding that a separate federal statute may already authorize the restriction being imposed.