Native American Groups Back Legal Brawl With Kalshi, Robinhood

A slate of Native American groups have filed a legal brief in support of a Wisconsin tribe’s case against prediction marketplace operator Kalshi Inc. and brokerage Robinhood Markets Inc. as tension between the technology companies and tribes escalates.

Tribes have long dominated gaming outside of Las Vegas because gambling was prohibited in most of the US but allowed on Indigenous territory. Native nations largely fund government services, tribal programs and economic development using gaming revenue, the groups wrote in their brief.

“For tribes, gaming is not merely a ‘commercial’ endeavor, but an existential one,” they wrote in the Tuesday brief, ...