Buying contracts on prediction markets is just another word for "gambling," says former Trump White House Chief of Staff Mick Mulvaney , who is leading a coalition that wants state authorities, not a federal commodities agency, to regulate that growing industry. "The simple answer is that it's gambling. It just is," Mulvaney told CNBC's Contessa Brewer , saying the burgeoning industry needs extra scrutiny following betting activity ahead of the Iran war. "I buy a prediction contract, whatever