Intelligence chief Ratcliffe: No proof yet of election interference; China now biggest U.S. threat

Intelligence chief Ratcliffe: No proof yet of election interference; China now biggest U.S. threat

U.S. Director of National Intelligence John Ratcliffe says American spy agencies have not yet found evidence of foreign entities changing votes and altering the recent election. Senior investigative correspondent Catherine Herridge spoke exclusively with Ratcliffe, in his first network interview as director of national intelligence.