Donald Trump ran for president promising a tougher stance on trade deals. He argued that many of these agreements were unfair to American companies and U.S. workers and promised to bring back jobs and factories that had fled these shores for nations like Mexico, China, and Japan. In particular he expressed concern for American steel and auto workers whose jobs were being lost due to “lousy trade deals.” This was often a popular position with blue collar union workers whose wages had been stagnant for nearly two decades.