WASHINGTON, DC - SEPTEMBER 13: Justin Cooper, a former White House aide to President Bill Clinton, testifies during a hearing on "Examining Preservation of State Department Federal Records" before the House Oversight and Government Reform Committee September 13, 2016 on Capitol Hill in Washington, DC. Bill Thornton and Paul Combetta of Platte River Network invoked their right under the Fifth Amendment not to answer questions, and Bryan Pagliano, a former IT advisor for the State Department did not show up to testify. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 13: Justin Cooper, a former White House aide to President Bill Clinton, testifies during a hearing on "Examining Preservation of State Department Federal Records" before the House Oversight and Government Reform Committee September 13, 2016 on Capitol Hill in Washington, DC. Bill Thornton and Paul Combetta of Platte River Network invoked their right under the Fifth Amendment not to answer questions, and Bryan Pagliano, a former IT advisor for the State Department did not show up to testify. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 13: Justin Cooper, a former White House aide to President Bill Clinton, testifies during a hearing on "Examining Preservation of State Department Federal Records" before the House Oversight and Government Reform Committee September 13, 2016 on Capitol Hill in Washington, DC. Bill Thornton and Paul Combetta of Platte River Network invoked their right under the Fifth Amendment not to answer questions, and Bryan Pagliano, a former IT advisor for the State Department did not show up to testify. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 13: Committee chairman Rep. Jason Chaffetz (R-UT) (L) shakes hands with Justin Cooper (R), a former White House aide to President Bill Clinton, after a hearing on "Examining Preservation of State Department Federal Records" before the House Oversight and Government Reform Committee September 13, 2016 on Capitol Hill in Washington, DC. Bill Thornton and Paul Combetta of Platte River Network invoked their right under the Fifth Amendment not to answer questions, and Bryan Pagliano, a former IT advisor for the State Department did not show up to testify. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 13: Justin Cooper, a former White House aide to President Bill Clinton, testifies during a hearing on "Examining Preservation of State Department Federal Records" before the House Oversight and Government Reform Committee September 13, 2016 on Capitol Hill in Washington, DC. Bill Thornton and Paul Combetta of Platte River Network invoked their right under the Fifth Amendment not to answer questions, and Bryan Pagliano, a former IT advisor for the State Department did not show up to testify. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - SEPTEMBER 13: Justin Cooper, a former White House aide to President Bill Clinton, testifies during a hearing on "Examining Preservation of State Department Federal Records" before the House Oversight and Government Reform Committee September 13, 2016 on Capitol Hill in Washington, DC. Bill Thornton and Paul Combetta of Platte River Network invoked their right under the Fifth Amendment not to answer questions, and Bryan Pagliano, a former IT advisor for the State Department did not show up to testify. (Photo by Alex Wong/Getty Images)

US President Barack Obama waves as he walks across the South Lawn to board Marine One as he departs the White House, September 13 2016, in Washington, DC. President Obama is traveling to Philadelphia, Pennsylvania to attend a Hillary for America campaign event. / AFP PHOTO / Olivier DoulieryOLIVIER DOULIERY/AFP/Getty Images

US President Barack Obama waves as he walks across the South Lawn to board Marine One as he departs the White House, September 13 2016, in Washington, DC. President Obama is traveling to Philadelphia, Pennsylvania to attend a Hillary for America campaign event. / AFP PHOTO / Olivier DoulieryOLIVIER DOULIERY/AFP/Getty Images