There are democratic presidents who have done worse things to Canada than Carter. I singled out Carter because, today, he seems to be viewed as left-leaning (for a POTUS) and un-Trump-like.
That the Republicans sold out their business branch for cronyism and populism with MAGA may end up being the negative outcome of that movement with the longest negative ramifications (my thinking being administrations can change immigration policy easily and Trump is more the final nail in the rules based international order than the initiator of its demise)