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.
Saul Loeb/AFP/Getty Images
Sears Holdings Corp., which operates Sears and Kmart, said Thursday that it is closing 72 more of its stores. Here, shoppers look for deals at the last remaining Sears store in Chicago before it closes this summer.
Patrick Gorski/NurPhoto via Getty Images
Oil tanks stand near the Trans Mountain pipeline expansion site in Burnaby, British Columbia, in April. The Canadian government bought the project in an effort to ensure it goes forward as the summer construction season nears.
Bloomberg via Getty Images
A visitor to the 21st China Beijing International High-Tech Expo looks at a computer chip through a microscope. The White House said Tuesday that it will impose tariffs on $50 billion in imports from China containing "industrially significant technology."
Ng Han Guan/AP