Politico has a poll of Canadians who are angry with Trump’s America, not viewing us as a reliable ally or friend (out from behind paywall). In a sense, they are probably correct.
Trump publicly takes a very dim view of nations he believes are “taking advantage of the US” in trade or otherwise. For example, Canada’s current military is a pale shadow of its former self. They know we have to defend them against invasion so they don’t bother.
Prior presidents put up with Canada’s “spoiled child” behavior, Trump is disinclined to do so. Tough love is more his style.
He seems much more likely than his predecessors to try to change things he dislikes, See for example, Venezuela and Iran. I’d be very surprised if Trump hasn’t privately considered whether taking over Canada is practical.
