Taxes. Did you know that the United States is the only major power that requires all its citizens to report their worldwide income? If you’ve moved down to Antarctica, built yourself an igloo, and trade snowberries for penguin toenail clippings, you have to report just how many clippings you’ve collected to the United States by June 15th. Why June 15th and not April 15th? Well, I have some information for you that will help you report your foreign income and file your U.S. taxes while abroad. I just finished mine.