Senators press Kalshi, Polymarket on insider trading and election manipulation risks
A bipartisan group of senators sent letters to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan demanding answers on election betting manipulation and insider trading risks. Both platforms must now produce information on their safeguards under congressional scrutiny.
Congressional demands turn vague concern into concrete deadlines for Kalshi and Polymarket. Mansour's televised defense of insider trading boundaries now feeds directly into subpoena bait, any inconsistency between his Bloomberg answers and Senate responses becoming leverage for critics. Warren and Curtis have set a tight Election Day deadline while midterm markets remain open, forcing document production during active trading.
The Pentagon has already barred troops from feeding nonpublic military information to prediction markets, signaling federal agencies are moving faster than platform rules. If the platforms' answers reveal surveillance gaps the CFTC missed, senators can draft legislation faster than rulemaking advances. Competitors should expect the same letter format applied to them next Congress.