Thirty-seven US states, the District of Columbia and the Northern Mariana Islands submitted a brief supporting New York against Kalshi to the Second Circuit Court of Appeals. Registered on 6 November, the brief argues that federal derivatives law should not prevent states from enforcing sports-betting and consumer-protection rules; a separate group of 38 states filed a Wisconsin brief concerning Polymarket, Coinbase, Robinhood and Crypto.com.
A coalition of 37 US states, the District of Columbia and the Northern Mariana Islands has filed a brief supporting New York in its case against Kalshi at the Second Circuit Court of Appeals. The brief, filed on 6 November, argues that federal derivatives law should not prevent states from applying sports-betting and consumer-protection rules.