Sen. Elizabeth Warren campaigns for gubernatorial candidate Richard Cordray

COLUMBUS, Ohio -- Massachusetts U.S. Sen. Elizabeth Warren is returning to Ohio to campaign on college campuses for a Democratic gubernatorial candidate criticized by President Donald Trump.Warren will headline rallies Thursday at Ohio State University in Columbus and at Ohio University in Athens with Richard Cordray and his running mate Betty Sutton.WATCH LIVE:Trump has called Cordray a "far-left disciple" of Warren, a potential 2020 presidential contender whom Trump frequently targets for mock