Judge Margaret McKeown called Kalshi's sports contracts a bet

Three federal judges on the Ninth Circuit looked at Kalshi's event contracts and saw a wager. That one-sentence summary of Judge Margaret McKeown's opinion, handed down unanimously in favor of the Blue Lake Rancheria Indians and the Chicken Ranch Rancheria of the Me-Wuk Indians, is the most consequential thing to happen to the legal architecture of prediction markets in months — and the newsroom has already filed the Ninth Circuit win framing. This is the other side of the same ruling, and it is worth reading separately.

The district court had classified Kalshi's sports-event contracts as derivatives under the Commodity Exchange Act. That classification was the whole ballgame: if the contracts are derivatives, the CFTC regulates them, federal law preempts state gambling law, and tribal gaming authority has no reach. The Ninth Circuit panel rejected that reading. McKeown wrote that the lower court was wrong to apply the CEA framework, and that the tribes had valid grounds to argue IGRA coverage instead. The appellate court sent the case back down for the remaining claims.

Kalshi does not have to stop operating in California today. The ruling is a preliminary injunction reversal, not a final judgment. But the legal footing has shifted in a way that matters more than any injunction order would.

Here is what I think the coverage has missed: the IGRA argument surviving Ninth Circuit scrutiny is a template, not an outcome. Any tribe with a gaming compact and a federal court in the Ninth Circuit's jurisdiction now has a plausible path to challenge event contract availability on or near their lands. The tribes that withdrew from this case — Picayune Rancheria of the Chukchansi Indians dropped out before the appellate ruling — may reconsider. And tribes in other circuits will watch whether this precedent travels.

I have seen preemption arguments collapse before when courts decide the product category question was never settled to begin with. The CFTC's position that event contracts are derivatives was always a conclusion dressed as an analysis. McKeown's panel declined to accept it on those terms. That is the finding that will be cited, excerpted, and argued over in every state and tribal proceeding that follows.

The cannibalization question that DraftKings is navigating geographically, the state-by-state enforcement actions that Kalshi's counsel has been warning against, the CLARITY Act's failure to establish a federal ceiling — all of it now sits underneath a circuit ruling that says the product classification was contested from the start. Kalshi can appeal, seek en banc review, or wait for the district court to work through the remaining claims. None of those paths is fast, and none of them restores the legal clarity the company had last month.