California Attorney General Rob Bonta has joined a bipartisan coalition of 37 attorneys general in filing an amicus brief supporting Ohio's enforcement of state gambling laws against prediction market operator Kalshi. - The brief supports Ohio in KalshiEx LLC v.
Schuler et al., pending in the Sixth Circuit. - Kalshi appealed a district court ruling that its sports-event contracts are not swaps under federal law.
- Ohio fined Kalshi $5 million for illegal gambling. - Oral arguments are set for July 30, 2026, with cases consolidated.
This marks the seventh multistate effort by California against prediction markets, emphasizing state regulatory authority.