This is still very optimistic. The only reason this would work is that America's negotiating partners want to believe the change is real. The American people will remain roughly the same electorate that elected Trump (for a second term, after he incited an insurrection), so the danger will remain.
As long as we're Godwin-ing this conversation, Germany has publicly repented for the whole Hitler thing. Public, unified repudiation of Trump would be minimum bar for America to be taken seriously again. I don't see this happening in my lifetime.
Yes, I've noticed AfD and I'm terrified of the future. But America, particularly the American right wing, has not even pretended to repent. And you'll notice I said it was necessary, not that it was sufficient (ed: actually I guess I wasn't super clear about that. This is clearer).
