"Harley-Davidson should stay 100% in America, with the people that got you your success," the President tweeted, as he threatened retaliation against the company, tweeting that "they will be taxed like never before!"
On Monday, White House Press Secretary Sarah Huckabee Sanders said the President was not going to back down from his efforts to level the playing field with Mexico, China, the European Union, and Canada.
"The President again is committed to making sure we have good deals," Sanders said, though she acknowledged at the Monday White House briefing that retaliatory tariffs by other countries - in protest of Mr. Trump's tariffs on imported steel and aluminum - were having a negative impact on some U.S. workers.
"Escalating tariffs against the United Sates does nothing to help Canada and it only hurts American workers," Sanders told reporters.
Those comments echoed Mr. Trump from an interview broadcast Sunday on Fox News, where the President again gave no signs of ratcheting down his efforts to put pressure on Canada, China, Europe and Mexico.
"We have some of the worst trade deals in the world," the President said.
But while Mr. Trump keeps pressing forward with tariffs, GOP lawmakers in the Congress are getting more and more nervous - in part because their large blocks of farm voters are getting more and more concerned about collateral damage on agricultural products.
U.S. auto makers are also getting concerned about the President's threat to levy new tariffs on imported cars, arguing that could cost thousands of jobs, and could mean much higher costs for American consumers as well.