WASHINGTON, DC - JULY 06: U.S. President Barack Obama departs with Secretary of Defense Ashton Carter (L) after delivering a statement from the Roosevelt Room at the White House on the deployment of U.S. troops in Afghanistan July 6, 2016 in Washington, DC. Obama said more U.S. troops will remain in Afghanistan than he originally planned, leaving 8,400 U.S. troops rather than the intended 5,000. (Photo by Win McNamee/Getty Images)

Minority Whip Steny Hoyer (C), D-Maryland, speaks with House Minority Leader Nancy Pelosi (2nd R), D-California, Ranking Member of the House Oversight and Government Reform Committee US Congressman Elijah Cummings (R), D-Maryland, and US House Assistant Democratic Leader James Clyburn ( 2nd L), D-South Carolina, on the east steps of the US Capitol in Washington, DC, July 6, 2016, to gun violence survivors, families and advocates during an event "to demand votes on meaningful gun violence prevention legislation." / AFP PHOTO / JIM WATSONJIM WATSON/AFP/Getty Images

US President Barack Obama delivers a statement on Afghanistan with Defense Secretary Ashton Carter (L) and the Chairman of the Joint Chiefs of Staff Gen. Joseph Dunford at the White House in Washington, DC, on July 6, 2016. Obama announced that 8,400 US troops will remain in Afghanistan into 2017 in light of the still "precarious" security situation in the war-ravaged country. / AFP PHOTO / NICHOLAS KAMMNICHOLAS KAMM/AFP/Getty Images

US President Barack Obama delivers a statement on Afghanistan with Defense Secretary Ashton Carter (L) and the Chairman of the Joint Chiefs of Staff Gen. Joseph Dunford at the White House in Washington, DC, on July 6, 2016. Obama announced that 8,400 US troops will remain in Afghanistan into 2017 in light of the still "precarious" security situation in the war-ravaged country. / AFP PHOTO / NICHOLAS KAMMNICHOLAS KAMM/AFP/Getty Images

WASHINGTON, DC - JULY 06: U.S. Speaker of the House Rep. Paul Ryan (R-WI) speaks during a press briefing after a House Republican Conference meeting July 6, 2016 at the headquarters of Republican National Committee in Washington, DC. Speaker Ryan spoke on the FBI's decision not to recommend criminal charges against Hillary Clinton for using a private email server during her time as Secretary of State. (Photo by Alex Wong/Getty Images)

Minority Whip Steny Hoyer (C), D-Maryland, speaks with House Minority Leader Nancy Pelosi (R), D-California, and US House Assistant Democratic Leader James Clyburn (L), D-South Carolina, on the east steps of the US Capitol in Washington, DC, July 6, 2016, to gun violence survivors, families and advocates during an event "to demand votes on meaningful gun violence prevention legislation." / AFP PHOTO / JIM WATSONJIM WATSON/AFP/Getty Images

WASHINGTON, DC - JULY 05: U.S. President Barack Obama returns to the White House July 5, 2016 in Washington, DC. Obama traveled in North Carolina to attend a campaign event with Democratic presidential candidate Hillary Clinton. (Photo by Olivier Douliery - Pool/Getty Images)

WASHINGTON, DC - JULY 05: U.S. President Barack Obama returns to the White House July 5, 2016 in Washington, DC. Obama traveled in North Carolina to attend a campaign event with Democratic presidential candidate Hillary Clinton. (Photo by Olivier Douliery - Pool/Getty Images)