You will have to relinquish your US citizenship. In reality, this never change anything about emigration, even for countries without extraterritorial reach. I

You will have to relinquish your US citizenship. In reality, this never change anything about emigration, even for countries without extraterritorial reach. I remember the argument in 2017 in France: "if we lower those taxes, rich will emigrate less". Result: same emigration from high earners(well, wealthy people since it was a tax on wealth), which was still lower than highly educated people (those who really matters). [edit] and Btw, those came back during covid, fun to watch, not paying taxes and still benefiting from socialized medicine, and still with the same dumb argument, forgetting about what the social contract is.