Paula Henriquez, of Boston, originally of The Dominican Republic, center, waves an American flag during a Naturalization Oath Ceremony at the John F. Kennedy Presidential Library and Museum, in Boston, today. About 200 people from over 50 countries took the U.S. citizenship oath during the ceremony presided by a federal judge. Henriquez resided in the U.S. for 25 years before becoming a citizen. (AP Photo/Steven Senne)
Question: When did the last of your grandparents come to the United States?