The CFTC chair testified Thursday that the commission will investigate insider trading in prediction markets with zero tolerance, pledging to find anyone committing fraud or manipulation. The hearing revealed tension after a Democrat noted Donald Trump Jr. is an investor in these markets and asked if the agency would play politics — which Selig denied. The Trump-appointed chair withdrew Biden-era proposals to ban prediction markets and recently sued states trying to regulate them federally — setting up potential enforcement pressure on insiders while simultaneously pushing deregulation.