Canadian Prime Minister Justin Trudeau (seen here with President Trump in October) on Thursday called the argument that U.S. steel import tariffs were necessary for national security reasons an "affront" to Canada.
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Steel coils sit on wagons leaving a factory in Duisburg, Germany on March 2. U.S. President Trump Monday decided to hold off on imposing most steel and aluminum tariffs until at least June 1.
The Navy's new USS Little Rock arrives at the harbor in Buffalo, N.Y., last December. In imposing tariffs on steel and aluminum imports, President Trump said the U.S. military should be as self-sufficient as possible.
Surrounded by steel and aluminum workers, President Trump holds up the order on steel imports that he signed in Roosevelt Room at the White House on Thursday.
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