WASHINGTON, DC - SEPTEMBER 27:  (L-R) U.S. Secretary of Homeland Security Jeh Johnson, FBI Director James Comey and Director of National Counterterrorism Center in the Office of the Director of National Intelligence Nicholas Rasmussen testify during a hearing before the Senate Homeland Security and Government Affairs Committee September 27, 2016 on Capitol Hill in Washington, DC. The committee held a hearing on "Fifteen Years After 9/11: Threats to the Homeland."  (Photo by Alex Wong/Getty Images)