AdvertisementWhy More Americans Are Renouncing U.S. CitizenshipFebruary 20, 2014Ari ShapirofacebookEmailThe number of U.S. citizens renouncing their American citizenship spiked to 3,000 last year, up from about 500 in earlier years. While reasons vary from person to person, a U.S. tax law passed in 2010 has complicated life for many Americans living abroad. (iStockphoto)