WASHINGTON, DC - JULY 07: FBI Director James Comey testifies during a hearing before House Oversight and Government Reform Committee July 7, 2016 on Capitol Hill in Washington, DC. The committee held a hearing "Oversight of the State Department," focusing on the FBI's recommendation not to prosecute Democratic presidential candidate Hillary Clinton for maintaining a private email server during her time as Secretary of State. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 07: FBI Director James Comey testifies during a hearing before House Oversight and Government Reform Committee July 7, 2016 on Capitol Hill in Washington, DC. The committee held a hearing "Oversight of the State Department," focusing on the FBI's recommendation not to prosecute Democratic presidential candidate Hillary Clinton for maintaining a private email server during her time as Secretary of State. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 07: Committee chairman Rep. Jason Chaffetz (R-UT) (R) speaks as ranking member Rep. Elijah Cummings (D-MD) (L) listens during a hearing before House Oversight and Government Reform Committee July 7, 2016 on Capitol Hill in Washington, DC. The committee held a hearing "Oversight of the State Department," focusing on the FBI's recommendation not to prosecute Democratic presidential candidate Hillary Clinton for maintaining a private email server during her time as Secretary of State. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 07: FBI Director James Comey (L) shakes hands with committee chairman Rep. Jason Chaffetz (R-UT) (R) after a hearing before House Oversight and Government Reform Committee July 7, 2016 on Capitol Hill in Washington, DC. The committee held a hearing "Oversight of the State Department," focusing on the FBI's recommendation not to prosecute Democratic presidential candidate Hillary Clinton for maintaining a private email server during her time as Secretary of State. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 07: Committee chairman Rep. Jason Chaffetz (R-UT) (L) talks to Rep. Trey Gowdy (R-SC) (R) during a hearing before House Oversight and Government Reform Committee July 7, 2016 on Capitol Hill in Washington, DC. The committee held a hearing "Oversight of the State Department," focusing on the FBI's recommendation not to prosecute Democratic presidential candidate Hillary Clinton for maintaining a private email server during her time as Secretary of State. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 07: U.S. Rep. Trey Gowdy (R-SC) speaks during a hearing before House Oversight and Government Reform Committee July 7, 2016 on Capitol Hill in Washington, DC. The committee held a hearing "Oversight of the State Department," focusing on the FBI's recommendation not to prosecute Democratic presidential candidate Hillary Clinton for maintaining a private email server during her time as Secretary of State. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 07: FBI Director James Comey testifies during a hearing before House Oversight and Government Reform Committee July 7, 2016 on Capitol Hill in Washington, DC. The committee held a hearing "Oversight of the State Department," focusing on the FBI's recommendation not to prosecute Democratic presidential candidate Hillary Clinton for maintaining a private email server during her time as Secretary of State. (Photo by Alex Wong/Getty Images)

FBI Director James Comey (L) shakes hands with Rep. Jason Chaffetz (R-UT), chairman of a House Oversight and Government Reform Committee, after a hearing on Capitol Hill in Washington, DC, on July 7, 2016. Comey is testifying on his July 5 recommendation that no charges be brought over US Democratic presidential candidate Hillary Clinton's use of a private email server while secretary of state, saying the investigation does not support a criminal prosecution. / AFP PHOTO / YURI GRIPASYURI GRIPAS/AFP/Getty Images