Let’s say I become a citizen of a country that doesn’t allow dual citizenship. During naturalization, new country B tells me I have to renounce citizenship from old country A.
Does that have any effects back in country A? How would country A know? Would country A even care if they found out?
I’m a dual citizen (Canada & USA, born Canadian). Part of naturalization in the US is the oath where you renounce citizenship from everywhere else. Thing is, most countries don’t care about that oath–Canada requires filing a special form and appearing before an official (IIRC) to renounce citizenship. I asked about the discrepancy–it turns out the US doesn’t actually care whether I’m a citizen elsewhere, largely because it’s difficult to figure it out and enforce it (this might have been the opinion of the immigration officer, not sure).