Kalshi and Robinhood have taken steps to move against the California Tribes’ lawsuit, with many of the arguments relating to the preliminary-injunction proceedings.

Andrew Kim, the attorney and litigator for Washington D.C.-based firm Goodwin Procter, set out the latest developments in the ongoing case, with the prediction market providers bringing separate motions to dismiss the entire lawsuit. 

The wider situation stems from a federal case launched in July this year, in the U.S. District Court in California.

It was brought by representatives of three fully recognized Californian tribes: the Blue Lake Rancheria, the Chicken Ranch Rancheria of Me-Wuk Indians, and the Picayune Rancheria of the Chukchansi Indians.  

Kalshi and Robinhood have moved to dismiss the CA Tribes' lawsuit. Many of the arguments overlap with the arguments presented as part of the preliminary-injunction proceedings; however, these motions address the tribal ordinance/sovereignty claims and RICO claims as well.

— Andrew Kim (@akhoya87) November 2, 2025

All three entities have existing business operations under the Indian Gaming Regulatory Act (IGRA), providing licensed casinos and sportsbook offerings within the Golden State. 

In the lawsuit, the plaintiffs have asserted that Kalshi and Robinhood (the defendants) are in violation of several laws and agreements, including the IGRA, because their sports event contracts equate to illegal sportsbook gambling.

As detailed here, the California Tribes’ lawsuit aims to prevent gambling on tribal land, rather than the entirety of California. 

If successful, the suit will put a potential end to Kalshi and Robinhood’s sports betting. It will also bring an injunction on Kalshi, which is currently perceived as unregulated gambling, something that the tribes are serious about combating.

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