United States Secret Service

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Mark Sullivan, director of the United States Secret Service, testifies before the Committee on Homeland Security and Governmental Affairs at the Dirksen Building in Washington, D.C. on Wednesday, May 23, 2012. (Barbara L. Salisbury/The Washington Times)

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Mark Sullivan, director of the United States Secret Service, right, is handed notes during his testimony before the Committee on Homeland Security and Governmental Affairs at the Dirksen Building in Washington, D.C. on Wednesday, May 23, 2012. (Barbara L. Salisbury/The Washington Times)

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Sens. Susan Collins, left, and Joe Lieberman have a private conversation on the dais during a hearing by the Committee on Homeland Security and Governmental Affairs in which United States Secret Service Director Mark Sullivan testified about the Secret Service scandal in Cartagena in which agents soliticted prostitutes. (Barbara L. Salisbury/The Washington Times)

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Mark Sullivan, left, director of the United States Secret Service, looks through notes while teatifying before the Committee on Homeland Security and Governmental Affairs at the Dirksen Building in Washington, D.C. on Wednesday, May 23, 2012, while Charles Edwards, acting inspector general of the U.S. Department of Homeland Security, looks on. (Barbara L. Salisbury/The Washington Times)

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Mark Sullivan, left, director of the United States Secret Service, and Charles Edwards, acting inspector general of the U.S. Department of Homeland Security, testified before the Committee on Homeland Security and Governmental Affairs at the Dirksen Building in Washington, D.C. on Wednesday, May 23, 2012. (Barbara L. Salisbury/The Washington Times)

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Mark Sullivan, director of the United States Secret Service, and Charles Edwards, acting inspector general of the U.S. Department of Homeland Security, testified before the Committee on Homeland Security and Governmental Affairs at the Dirksen Building in Washington, D.C. on Wednesday, May 23, 2012. (Barbara L. Salisbury/The Washington Times)

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Mark Sullivan, left, director of the United States Secret Service, and Charles Edwards, acting inspector general of the U.S. Department of Homeland Security, take their seats before testifying before the Committee on Homeland Security and Governmental Affairs at the Dirksen Building in Washington, D.C. on Wednesday, May 23, 2012. (Barbara L. Salisbury/The Washington Times)

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Mark Sullivan, left, director of the United States Secret Service, and Charles Edwards, acting inspector general of the U.S. Department of Homeland Security, testify before the Committee on Homeland Security and Governmental Affairs at the Dirksen Building in Washington, D.C. on Wednesday, May 23, 2012. Sullivan repeatedly spoke to the professional and ethical nature of most people in the Secret Service, but he did say that they took the actions in Cartagena seriously and will make every effort to ensure that such actions do not occur again. (Barbara L. Salisbury/The Washington Times)

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Mark Sullivan, director of the United States Secret Service, testifies before the Committee on Homeland Security and Governmental Affairs at the Dirksen Building in Washington, D.C., on Wednesday, May 23, 2012. Sullivan repeatedly spoke to the professional and ethical nature of most people in the Secret Service, but he did say that they took the actions in Cartagena seriously and will make every effort to ensure that such actions do not occur again. (Barbara L. Salisbury/The Washington Times)

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A Secret Service countersniper team looks out from atop the Pentagon during a 10th-anniversary remembrance ceremony at the Pentagon Memorial in Washington on Sunday, Sept. 11, 2011. (AP Photo/J. Scott Applewhite)

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**FILE** A Secret Service agent stands guard in Washington at the scene where President Reagan, Agent Timothy McCarthy and a Washington police officer were shot during an assassination attempt on March 30, 1981. (Associated Press)

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** FILE ** In this March 30, 1981, photo, an unidentified Secret Service agent, automatic weapon drawn, yells orders after shots were fired at President Ronald Reagan outside a Washington hotel. A newly released Secret Service audiotape from the attempted assassination of Reagan sheds lights on the chaotic aftermath when neither the president nor his agents realized he’d been shot. (AP Photo/Ron Edmonds)