FILE - In this June 8, 1977 file photo, President Jimmy Carter stands with his daughter Amy as she waves to other children on the street in the Georgetown section of Washington, guarded by Secret Service agents. Carter went to Georgetown to dine at the home of Management and Budget Director Bert Lance. The Secret Service has been tarnished by a prostitution scandal that erupted April 13, 2012 in Colombia involving 12 Secret Service agents, officers and supervisors and 12 more enlisted military personnel ahead of President Barack Obama's visit there for the Summit of the Americas. (AP Photo/Barry Thumma)