WASHINGTON, DC - JUNE 21: Sen. John Cornyn (R-TX), speaks to the media after the Senate Republicans weekly policy luncheon on Capitol Hill, June 21, 2016 in Washington, DC. (Photo by Mark Wilson/Getty Images)

WASHINGTON, DC - JUNE 21: House Speaker Paul Ryan (R-WI), delivers remarks on "Cultivating a Modern Congress", on Capitol Hill, June 21, 2016 in Washington, DC. Ryan spoke at the House Administration Committee 2016 Legislative Data and Transparency Conference. (Photo by Mark Wilson/Getty Images)

A Secret Service agent dries rain water from US President Barack Obama's limo before traveling to Walter Reed National Military Medical Center June 21, 2016 in Washington, DC. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

WASHINGTON, DC - JUNE 21: Sen. John Thune (R-SD), speaks to the media after the Senate Republicans weekly policy luncheon on Capitol Hill, June 21, 2016 in Washington, DC. (Photo by Mark Wilson/Getty Images)

WASHINGTON, DC - JUNE 21: Sen. John Cornyn (R-TX), (L), speaks to the media while flanked by Senate Majority Leader Mitch McConnell (R-KY), after the Senate Republicans weekly policy luncheon on Capitol Hill, June 21, 2016 in Washington, DC. (Photo by Mark Wilson/Getty Images)

WASHINGTON, DC - JUNE 21: Sen. John Cornyn (R-TX), (L), speaks to the media while flanked by Senate Majority Leader Mitch McConnell (R-KY), after the Senate Republicans weekly policy luncheon on Capitol Hill, June 21, 2016 in Washington, DC. (Photo by Mark Wilson/Getty Images)

WASHINGTON, DC - JUNE 21: Sen. John Cornyn (R-TX), speaks to the media after the Senate Republicans weekly policy luncheon on Capitol Hill, June 21, 2016 in Washington, DC. (Photo by Mark Wilson/Getty Images)

WASHINGTON, DC - JUNE 21: Sen. John Thune (R-SD), (L), speaks to the media after the Senate Republicans weekly policy luncheon on Capitol Hill, June 21, 2016 in Washington, DC. Also pictured are Sen. John Cornyn (R-TX). (C), and Senate Majority Leader Mitch McConnell (R-KY) (R). (Photo by Mark Wilson/Getty Images)