Almost every day since the expansion of Canada’s Trans Mountain pipeline was completed in May, a tanker laden with oil sands crude shipped through the line has passed under Vancouver’s Lions Gate Bridge en route to refineries around the Pacific.

OTTAWA — Canada’s retaliatory tariffs will target Republican states and Donald Trump allies. “Canadians understand that we need to respond to this,” Prime Minister Justin Trudeau said Saturday night. “We need to respond in a way that is appropriate, that is measured but forceful, that meets the moment.”

Trump on Saturday had directed that 25% tariffs on most imports from the two American partners — and 10% on Canadian energy products — go into effect at midnight Tuesday.