Green: unlimited birthright citizenship
Red: Limited birthright Citizenship
Gray: (At least from my own country, Switzerland): No birthright citizenship
Chile would be good. It has a fairly strong passport, which I believe is stronger than the USA one in 2025 (before Trump), since it can still travel to the EU visa free.
Might I suggest a second good reason for South American countries--- when nuclear war hits the US, and it will, the southern hemisphere has a shot of surviving a nuclear winter. Billions will die but mostly in the northern hemisphere, even after accounting for fallout spread.
That's what everybody will be saying in the Northern Hemisphere every time there is a break in the nuclear winter cloud cover, only with more feeling of joy (so, more exclamation marks!!!).