House Oversight Committee Chair James Comer said the committee plans to investigate prediction market platforms Kalshi and Polymarket over concerns that government employees or others with access to nonpublic information could profit from insider trading. He said the committee will seek internal records from both CEOs and is considering legislation that would bar lawmakers and government officials from participating in prediction markets. The investigation centers on whether event contracts were influenced by nonpublic or potentially classified information and could lead to stricter regulation, affecting platform operations and investor strategies.