the Bottom line,...even if you give up your US residency and have a physical address in another country but you derive your income from US sources,...

you owe US taxes.

If that was not true then Antigua would be overrun by US millionaires and that is not the case.

So tax free tax havens are not clinching the deal for them millionaire types.

https://www.investopedia.com/articles/tax/11/...idents.asp