GM's Barra on trade tariffs: Level playing fields or 'open up the markets and let us compete' GM's Barra on trade tariffs: Level playing fields or 'open up the markets and let us compete' May 23, 2018 dzadmin Comments 0 Comment General Motors CEO Mary Barra wants China to further reduce its protective tariffs. “I’d like to see it be level,” she told Goldman Sachs CEO Lloyd Blankfein during an event in New York.