“There is a silver lining, however, and that is the Foreign Earned Income Exclusion (FEIE). What is it and how does it work? If you qualify for the FEIE you can exclude a not-insignificant amount of foreign earnings from your US taxable income. This amount is adjusted annually for inflation and is set at US$97,600 for 2013. So, assuming that you qualify for the FEIE, you can exclude up to US$97,600 of your foreign earned income (for 2013) from your US taxable income. Keep in mind that you still have a tax liability to the country in which you reside and earned the foreign income. That is unless you earn your income in one of these 18 countries that have no personal income tax.”
http://www.internationalman.com/articles/americans-can-still-benefit-from-tax-havens