Blue Lake Rancheria v. Kalshi, Inc. — 9th Cir. (argued July 10, 2026)
The Ninth Circuit considers whether three California tribes may stop Kalshi from offering sports-event contracts to users on tribal lands while their lawsuit against Kalshi and Robinhood proceeds. The tribes say the contracts are unauthorized Class Three gaming, a federal category that includes sports betting. The companies say they are federally regulated derivatives and do not violate the tribal gaming agreements or procedures at issue. The district court denied a preliminary injunction, an order that would halt the contracts during the case, and the tribes appealed.
Blue Lake Rancheria v. Kalshi, Inc. (No. 25-7504) — U.S. Court of Appeals for the Ninth Circuit, argued July 10, 2026.
Sources
Argument audio — U.S. Court of Appeals for the Ninth Circuit:https://cdn.ca9.uscourts.gov/datastore/media/2026/07/10/25-7504.mp3
Argument listing — U.S. Court of Appeals for the Ninth Circuit:https://www.ca9.uscourts.gov/cases/streams-videos/archive?case=25-7504&hearingDate=2026-07-10
Order denying the preliminary injunction:https://cases.justia.com/federal/district-courts/california/candce/3%3A2025cv06162/453216/71/0.pdf
Reply brief for the tribes:https://turtletalk.blog/wp-content/uploads/2026/07/reply-1.pdf
Answering brief for Robinhood:https://turtletalk.blog/wp-content/uploads/2026/07/robinhood-answer-brief.pdf
Oral-argument coverage — InGame:https://www.ingame.com/kalshi-blue-lake-rancheria-ninth-district-oral/
Lester J. Marston — attorney profile:https://www.marstonlawoffices.com/about
Grant R. Mainland — Milbank:https://www.milbank.com/en/news/milbank-litigation-partner-grant-mainland-to-speak-at-2026-aba-business-law-spring-meeting.html
Antony L. Ryan — Cravath:https://www.cravath.com/people/antony-l-ryan.html
- 0:00Introduction
- 0:41Lester J. Marston
- 21:17Grant R. Mainland
- 39:46Antony L. Ryan