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."
I think this is the most important issue. The US administration is realising that other countries are making new deals around the US, and they are using trade pressure to revert that trend. Carney was right to reject the deal. It may hurt in the short term, but it also gives him the opportunity to develop new trade networks.