[Symbiote]

You need to be earning over $100,000 a year, and live in a country where local tax is lower than in the USA.

That's not especially common.

Further details: https://www.americansabroad.org/us-taxes-abroad-for-dummies-...

(I'm not American, but none of several close friends in Europe with dual US/something-EU citizenship have given up their American citizenship.)

[nvarsj]

It gets WAY more complex if you don't have a standard salary job. Even if you don't make over 100K a year. E.g. small business owner expat is in for a world of pain, stress, and audit.