Canadian here. It'll be at least a generation, if it ever happens at all. I have two kids in elementary school and every single one of their peers is talking about America as a threat. More than once I've had one of my kids ask me if it's true Donald Trump wants to take over Canada. It's a whole generation of children growing up resentful of America, viewing it as a threat rather than an ally. Those attitudes aren't going to just evaporate after Trump leaves office.
I took no end of downvotes and snarky comments from arrogant Americans on this fucking website for suggesting that the old days are not coming back, largely because Canadians have realized that Trump is broadly representative of Americans. He is a symptom of an underlying sickness. The problem is Americans themselves.
To wit: Harris got 75 million votes in 2024[0]. The total voting-age population is roughly 270 million [1], which means less than a third of the US electorate voted against Trump. The remaining two thirds either voted for him or were sufficiently unbothered so as to not vote at all. So we see a bunch of Americans in the media or on socials crying crocodile tears about how tHeIr AlLiEs ArE sO vAlUaBlE tO tHeM and traitors in the Alberta government notwithstanding I think broadly speaking Canadians realize it's bullshit and have moved on. Any treaty the US signs is not worth the paper it's printed on.
This schism is permanent, and I think Americans have yet to comprehend just how much foreign attitudes towards America have moved over the last year and a half.
[0] https://en.wikipedia.org/wiki/2024_United_States_presidentia...
[1] https://www.federalregister.gov/documents/2024/03/29/2024-06...