Karim Walji is certain he is about lose business. Worried he may have to shrink his workforce — fire people — for the first time in eight years. He blames President Donald Trump and what Walji sees as a reckless power trip.

If tariffs evolve from a negotiating tactic to a new normal, economic and diplomatic costs to all of North America will grow.

Canada’s initial retaliatory tariffs against the U.S. will remain in place despite President Donald Trump postponing 25% tariffs on many imports from Canada for a month, two senior Canadian government officials said.