Over the summer, Canadian Prime Minister Mark Carney indelibly (and correctly) said that the U.S. had essentially "attacked" his country in an unprovoked act of trade aggression. "America has changed, [...] and we will not return to our old relationship," he said.
I was of course entirely with him on the merits. The Trump administration had started harassing Canada, belittling its nationhood, threatening to annex its territory, and using strong-arm trade war tactics to try to force it to cede sovereignty—all totally without provocation. It was and is an insanely gratuitous sabotage of a centuries-old friendship and alliance.