Ho-Chunk Nation narrows Kalshi lawsuit to tribal gaming law after judge allows case to proceed
The Ho-Chunk Nation narrowed its lawsuit against Kalshi to focus on tribal gaming law after a federal judge allowed the case to proceed on Thursday, May 21, 2026, dismissing RICO claims eight days prior. The tribe argues that federal tribal gaming law disproves Kalshi's advertising claims, intensifying pressure on the regulated prediction market platform from tribal gaming interests. The dispute centers on sports prediction markets and tribal concerns, with the case now advancing in federal court as part of broader litigation against Kalshi across multiple jurisdictions involving state attorneys general and tribal nations.
Keeps alive a tribal gaming-rights argument under IGRA that could force Kalshi to restructure or pull its sports event contracts in any state with federally protected tribes. Any adverse ruling on tribal land exposure could compel geoblocking near reservation boundaries nationwide.
Brings the running tally of tribal lawsuits against Kalshi to two — Ho-Chunk in Wisconsin and four pueblos in New Mexico — as tribal gaming compacts become the most aggressive front in the prediction platform's multi-jurisdiction legal defense.