Mark Sullivan, Director of the United States Secret Service, at a hearing of the Senate Homeland Security and Government Affairs Committee in May of 2012. Brendan Smialowski /AFP/Getty Images hide caption

itoggle caption Brendan Smialowski /AFP/Getty Images

Homeland Security Secretary Janet Napolitano as she testified this morning before the Senate Judiciary Committee. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images