Nearly 300 foreign-born children received citizenship certificates this week at the U.S. Citizenship and Immigration Services (USCIS) center in New York City. Children of naturalized immigrants can receive citizenship if they arrived in the United States as minors, but they must first go through a process at the USCIS to prove that they have become Americans. Photographer John Moore took these portraits of some new U.S. citizens. (14 PHOTOS)