Rep. Bryan Steil (R-WI), chair of the House committee overseeing ethics rules, plans to introduce a measure on Thursday prohibiting lawmakers and their families from betting on prediction markets tied to policy, politics, or elections. The provision attaches to a pending bill, backed by Speaker Mike Johnson and President Trump, that restricts congressional stock trading and is promised a House floor vote. Steil's measure imposes penalties of $2,000 or 10% of transaction value plus gains for violations while allowing bets on non-political events such as sports.