[Tarek Mansour: Supports Banning Members of Congress and Government Officials from Trading Prediction Markets They Can Influence] Tarek Mansour, CEO of prediction market platform Kalshi, stated his support for rules prohibiting members of Congress and government officials from trading prediction markets they can influence. Kalshi has been regulating insider trading since its founding in 2018. U.S. Representatives Jeff Merkley and Jamie Raskin introduced legislation to ban event contracts involving elections, sports, military operations, and most government actions.