WASHINGTON, DC - SEPTEMBER 21: Internal Revenue Service Commissioner John Koskinen is sworn in before testifying to the House Judiciary Committee in the Rayburn House Office Building on Capitol Hill September 21, 2016 in Washington, DC. Despite the lack of evidence against him, Koskinen is facing impeachment threats from conservatives in the House of Representatives for his role in the destruction of computer backups containing thousands of emails sought by Congress in its investigation of political targeting. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 21: Internal Revenue Service Commissioner John Koskinen arrives for a hearing of the House Judiciary Committee in the Rayburn House Office Building on Capitol Hill September 21, 2016 in Washington, DC. Despite the lack of evidence against him, Koskinen is facing impeachment threats from conservatives in the House of Representatives for his role in the destruction of computer backups containing thousands of emails sought by Congress in its investigation of political targeting. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 21: House Judiciary Committee Chairman Bob Goodlatte (R-VA) (L) and ranking member Rep. John Conyers (D-MI) hold a hearing to hear from Internal Revenue Service Commissioner John Koskinen in the Rayburn House Office Building on Capitol Hill September 21, 2016 in Washington, DC. Despite the lack of evidence against him, Koskinen is facing impeachment threats from conservatives in the House of Representatives for his role in the destruction of computer backups containing thousands of emails sought by Congress in its investigation of political targeting. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 21: Internal Revenue Service Commissioner John Koskinen is sworn in before testifying to the House Judiciary Committee in the Rayburn House Office Building on Capitol Hill September 21, 2016 in Washington, DC. Despite the lack of evidence against him, Koskinen is facing impeachment threats from conservatives in the House of Representatives for his role in the destruction of computer backups containing thousands of emails sought by Congress in its investigation of political targeting. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 21: Internal Revenue Service Commissioner John Koskinen (L) talks with House Judiciary Committee member Rep. Trey Gowdy (R-SC) before a hearing of the committee in the Rayburn House Office Building on Capitol Hill September 21, 2016 in Washington, DC. Despite the lack of evidence against him, Koskinen is facing impeachment threats from conservatives in the House of Representatives for his role in the destruction of computer backups containing thousands of emails sought by Congress in its investigation of political targeting. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 21: Internal Revenue Service Commissioner John Koskinen (L) talks with House Judiciary Committee member Rep. Jim Jordan (R-OH) before a hearing of the committee in the Rayburn House Office Building on Capitol Hill September 21, 2016 in Washington, DC. Despite the lack of evidence against him, Koskinen is facing impeachment threats from conservatives in the House of Representatives for his role in the destruction of computer backups containing thousands of emails sought by Congress in its investigation of political targeting. (Photo by Chip Somodevilla/Getty Images)

Protesters and family members of 9/11 victims hold placards in front of the White House regarding President Barack Obama's threatened veto of the Justice Against Sponsors of Terrorism Act (JASTA) in Washington, U.S., September 20, 2016. REUTERS/Gary Cameron

WASHINGTON, DC - SEPTEMBER 20: Ivanka Trump, daughter of Republican presidential nominee Donald Trump, visits with women GOP members of Congress at the Republican National Committee headquarters on Capitol Hill September 20, 2016 in Washington, DC. In an effort to reach out to women voters, Trump met with the female politicians to promote her father's proposals on child care. (Photo by Chip Somodevilla/Getty Images)