WASHINGTON, DC - JULY 07: Sen. Tim Scott (R-SC) speaks to reporters as he leaves a meeting with Republican presidential candidate Donald Trump at the Republican National Senatorial Committee on July 7, 2016 in Washington, DC. Mr. Trump and the senators met in an attempt to unify ahead of the upcoming Republican national convention. (Photo by Zach Gibson/Getty Images)

WASHINGTON, DC - JULY 07: Sen. Bob Corker (R-TN), left, and Sen. Jeff Sessions (R-AL), right, approach members of the press following a meeting with Republican presidential candidate Donald Trump at the Republican National Senatorial Committee on July 7, 2016 in Washington, DC. Mr. Trump and the senators met in an attempt to unify ahead of the upcoming Republican national convention. (Photo by Zach Gibson/Getty Images)

WASHINGTON, DC - JULY 07: Sen. David Perdue (R-GA) speaks to the press following a meeting with Republican presidential candidate Donald Trump at the Republican National Senatorial Committee on July 7, 2016 in Washington, DC. Mr. Trump and the senators met in an attempt to unify ahead of the upcoming Republican national convention. (Photo by Zach Gibson/Getty Images)

WASHINGTON, DC - JULY 07: Sen. Jeff Sessions (R-AL) speaks to the press following a meeting with Republican presidential candidate Donald Trump at the Republican National Senatorial Committee on July 7, 2016 in Washington, DC. Mr. Trump and the senators met in an attempt to unify ahead of the upcoming Republican national convention. (Photo by Zach Gibson/Getty Images)

WASHINGTON, DC - JULY 07: Sen. Bob Corker (R-TN), left, and Sen. Jeff Sessions (R-AL), right, approach members of the press following a meeting with Republican presidential candidate Donald Trump at the Republican National Senatorial Committee on July 7, 2016 in Washington, DC. Mr. Trump and the senators met in an attempt to unify ahead of the upcoming Republican national convention. (Photo by Zach Gibson/Getty Images)

WASHINGTON, DC - JULY 07: Sen. Jeff Sessions (R-AL) speaks to the press following a meeting with Republican presidential candidate Donald Trump at the Republican National Senatorial Committee on July 7, 2016 in Washington, DC. Mr. Trump and the senators met in an attempt to unify ahead of the upcoming Republican national convention. (Photo by Zach Gibson/Getty Images)

WASHINGTON, DC - JULY 07: US President Barack Obama waves he crosses The South Lawn at The White House before boarding Marine One on July 7, 2016 in Washington, DC. President Obama will travel to Warsaw, Poland to attend the 2016 NATO Summit. (Photo by Zach Gibson/Getty Images)

WASHINGTON, DC - JULY 07: US President Barack Obama waves as he boards Marine One on The South Lawn at The White House on July 7, 2016 in Washington, DC. President Obama will travel to Warsaw, Poland to attend the 2016 NATO Summit. (Photo by Zach Gibson/Getty Images)