Canada has suspended trade negotiations with the United States, Prime Minister Mark Carney said, after last-minute changes to Washington’s proposed terms were deemed “unfair” and “uneconomic”, a day after US President Donald Trump had said that US "should be able to have a deal with Canada."
This might be overselling it. Only some provinces produce/export and only some states benefit, mostly regional and mostly northern states. There would certainly be an impact, especially short term, but claiming it hits their entire infrastructure is a stretch.