U.S. Vice President Joe Biden (L) addresses U.S. soldiers as U.S. Gen. Raymond Odierno (C), commander of the Multi-National forces in Iraq, and Command Sergeant Major Lawrence Wilson listen on during a U.S. naturalization ceremony at the Al-Faw Palace in Baghdad, July 4, 2009. Reuters Pictures 4 months ago

U.S. Vice President Joe Biden (L) addresses U.S. soldiers as U.S. Gen. Raymond Odierno (C), commander of the Multi-National forces in Iraq, and Command Sergeant Major Lawrence Wilson listen on during a U.S. naturalization ceremony at the Al-Faw Palace in Baghdad, July 4, 2009.