> As a random aside: The US Gov is practically the only country in the world who tries to collect income tax from US citizens living abroad. The fact that Americans who move away have to file US tax returns for the remainder of their life is bonkers.
Hm, I can somewhat understand that? If I was moving out of Germany and got into trouble abroad, I would expect (and receive) help from the German consulate/government. Paying at least some taxes for that seems reasonable, as long as double taxation and all that is avoided.
If you get into trouble within a country where you have citizenship, another country where you also have citizenship won't intervene.
So for example, if you were a citizen in the US and Canada, and got into trouble in Canada the US would not assist you. However if you were on holiday in Canada or even a permanent resident then they would.
That is pretty standard international practice. That countries won't interfere with another country's interactions with its own citizens (regardless of the source of citizenship).
The US-UK got into quite an international spat a few years ago when the UK tried to intervene after a dual UK-US citizen got sentenced to death in the US.
True, but the grandparent did not say a word about dual citizenship, merely about Americans who moved abroad. I can understand issues arising from dual citizenship and I am personally not a fan of that being even an option to people, in part due to these issues.
Hm, I can somewhat understand that? If I was moving out of Germany and got into trouble abroad, I would expect (and receive) help from the German consulate/government. Paying at least some taxes for that seems reasonable, as long as double taxation and all that is avoided.