Former Nucor CEO and now Trump trade adviser, Dan DiMicco, talked about international trade, Trump and why he supports him. DiMicco sat for an interview on Wednesday, Sept. 7, 2016. In nominating former Reagan administration official Robert Lighthizer to be U.S. trade representative, President-elect Donald Trump bypassed DiMicco, a former steel executive. John D. Simmons jsimmons@charlotteobserver.com