Look at the behavior of the current administration, and ask if you'd try to work with them to improve a relationship that the administration deliberately made deteriorate.
You can argue that there are many reasons that Canada has for maintaining that relationship, but the same thing applies to the US, and it threw that away. Basically: given the behavior of the US, what reasonable country would want to continue to have their economy be dependent on it?
Also, while Huwei may be producing compromised equipment, what reason does Canada have for trusting US provided equipment? Or any other country -- every country that manufactures any network, radio, satellite, or other technology has a spy agency. All of those spy agencies would happily take an opportunity to compromise each others equipment. The "correct" course of action is to design your secure systems to assume non -trustworthy network hardware.
Mostly don't buy cheap equipment from anyone, because it seems they always ship on day 1 with software that's 2 years old that somehow has like 3 years of vulnerabilities :D