Trucks at the Port of Los Angeles. Officials at the port assisted in putting together a study that found as many as 1.5 million U.S. jobs, and nearly $190 billion in economic activity, is threatened by tariffs. (Nick Ut/Associated Press) [Stay on top of transportation news: Get TTNews in your inbox .] Even as the Trump administration is set to sign phase one of the trade agreement with China, consumers and American businesses continue […]