> Just an FYI: one hiccup I heard of giving up your US citizenship is that banks didn’t recognize you could be born in USA but not a US citizen.

I had this issue just last month with a UK financial institution (Raisin). I tried to explain it but they obviously were not interested. I actually still have my citizenship (I'd love to renounce but that's currently impossible) but I felt it was worth pointing out their policy was unnecessarily discriminative.