That's only true for "earned" income. Income from dividends, interest, capital gains, etc is still taxed from the first dollar just as if you were residing in

That's only true for "earned" income. Income from dividends, interest, capital gains, etc is still taxed from the first dollar just as if you were residing in the USA. Furthermore, if you earn income as a freelancer, it's likely that you still have to pay self-employment tax.