A US politician was banned from using the Kalshi platform and fined by Kalshi for insider trading.

A political candidate who ran for governor of California has been banned from using Kalshi for violating insider trading rules. During last year's election campaign, the candidate bet approximately $200 on his own chances of winning and posted related content on the X platform. Kalshi has imposed a five-year ban and a $2,000 fine on him. This description refers to Kyle Langford, who is currently running for Congress. In addition, a YouTube editor has been banned for two years and fined approximately $20,000 for using non-public information to conduct approximately $4,000 in market transactions between August and September 2025. CFTC Chairman Mike Selig stated that the agency has established a Prediction Markets Advisory Committee to work with industry participants to combat insider trading and warned violators of legal consequences.