Based on my limited knowledge it seems possible. The US allows you to exclude $106k USD in foreign income if you’re not a US resident. You can also add some housing costs to bump it up.
Many countries won’t tax you if you work there and a) all your income and work is outside the country, b) you do t spend enough time there to become a tax resident (I’ve seen 180 days for some).
So if you’re willing (and able) to split your time between 3 countries, not go back to the US and get all of your income from outside those 4 countries, you could effectively pay little to no income tax and it would be legal.
Many countries won’t tax you if you work there and a) all your income and work is outside the country, b) you do t spend enough time there to become a tax resident (I’ve seen 180 days for some).
So if you’re willing (and able) to split your time between 3 countries, not go back to the US and get all of your income from outside those 4 countries, you could effectively pay little to no income tax and it would be legal.
But please hire a CPA.