The National Football League filed an amicus brief arguing prediction markets like Kalshi should face state gambling regulation over game integrity.
https://www.foxnews.com/outkick-sports/nfl-calls-prediction-markets-form-sports-gambling-urges-courts-let-states-regulate
https://www.foxnews.com/outkick-sports/nfl-calls-prediction-markets-form-sports-gambling-urges-courts-let-states-regulate