** FILE ** In this April 25, 2012, file photo, Homeland Security Secretary Janet Napolitano testifies on Capitol Hill in Washington before the Senate Judiciary Committee hearing on the Secret Service prostitution scandal. (AP Photo/Susan Walsh, File)

Photo by: Susan Walsh

** FILE ** In this April 25, 2012, file photo, Homeland Security Secretary Janet Napolitano testifies on Capitol Hill in Washington before the Senate Judiciary Committee hearing on the Secret Service prostitution scandal. (AP Photo/Susan Walsh, File)