>> Both the US and Canada can often use evidence seized illegally - the judges in both places have the ability, but not the obligation, to throw out such evidence.
Look that one up. The US is very big on the exclusionary rule. If evidence was seized improperly, unconstitutionally, it is out. The most famous US criminal cases (think Miranda) involve excluding evidence for such reasons, even if that means an admitted criminal is to be set free. The concept so permeates US legal culture that courts take is as a necessary implication whenever discussing evidence.
https://en.wikipedia.org/wiki/Hudson_v._Michigan
where everyone involved says the evidence was seized improperly, unconstitutionally, but the evidence is very much in and the defendants are in prison today.
While Canada's justice system is noticeably different than the US's, it isn't generally worse at protecting the rights of the public. Yes, there are search warrants, and in fact Canada is more protective of an individual's home than the US is. Yes, you have the right to a jury trial for serious crimes. Yes, you have the right to remain silent (though it is somewhat different). Both the US and Canada can often use evidence seized illegally - the judges in both places have the ability, but not the obligation, to throw out such evidence.