This article is a little disappointing it seems to be based on rhetoric and emotion rather than  sifting out what the actual situation is besides the propaganda being thrown around by the US to try to bully both countries.  Trump just hasn't learned the position the US is in yet. With the withdrawal from TPP he has weakened his leverage with Canada & Mexico, both countries have free trade options, it will hurt the US more . Furthermore many organizations and the majority of businesses in the US would litigate against it, farmers, manufacturing , etc and many large lobbyist groups would be pushing back if he goes rogue .