Senator John McCain speaks with reporters after voting against the "skinny repeal" health care bill on Capitol Hill. REUTERS/Aaron P. Bernstein 

Protesters gather outside the Capitol Building prior to an all night round of health care votes. REUTERS/Aaron P. Bernstein 

Senator Lindsey Graham and Senator Ron Johnson talk prior to a press conference about their resistance to the so-called "Skinny Repeal" of the Affordable Care Act. REUTERS/Aaron P. Bernstein 

Senate Majority Leader Mitch McConnell walks to his office prior to a health care vote. REUTERS/Aaron P. Bernstein 

Senator Ben Sasse speaks to reporters as aides carry pizzas prior to an all night vote. REUTERS/Aaron P. Bernstein 

Vice President Mike Pence arrives prior to an all night round of health care votes. REUTERS/Aaron P. Bernstein 

Aides carry a sign near the Senate floor prior to an all night round of health care votes. REUTERS/Aaron P. Bernstein 

Senator Bob Corker talks to reporters. REUTERS/Yuri Gripas 

Senator Lisa Murkowski talks to reporters as she arrives for a health care vote.
REUTERS/Yuri Gripas 

House Minority Leader Nancy Pelosi and House democrats celebrate the 52nd Anniversary of Medicare and Medicaid. REUTERS/Yuri Gripas 

Senator Ron Johnson, accompanied by Senator Lindsey Graham, speaks during a press conference about their resistance to the so-called "Skinny Repeal". REUTERS/Aaron P. Bernstein 

Senator Ted Cruz speaks with reporters after the failure of the "skinny repeal" health care bill. REUTERS/Aaron P. Bernstein 

Senator Susan Collins (R-ME) departs after a healthcare vote, July 26, 2017. REUTERS/Eric Thayer 

Senator John McCain (R-AZ) arrives for a healthcare vote, July 26, 2017. REUTERS/Eric Thayer 

Senator Thom Tillis (R-NC) arrives for a health care vote, July 26, 2017. REUTERS/Eric Thayer 

Senator Lisa Murkowski (R-AK) arrives for a health care vote, July 26, 2017. REUTERS/Eric Thayer 

Senator Bob Corker (R-TN) arrives for a health care vote, July 26, 2017. REUTERS/Eric Thayer 

Senator John Thune (R-SD) speaks during a television interview ahead of healthcare votes, July 26, 2017. REUTERS/Aaron P. Bernstein 

Senator John McCain, recently diagnosed with an aggressive form of brain cancer, departs after returning to the Senate to vote on health care legislation on Capitol Hill in Washington, July 25, 2017. REUTERS/Aaron P. Bernstein 

Senate Majority Leader Mitch McConnell arrives to speak with reporters following the successful vote to open debate on a health care bill on Capitol Hill, July 25, 2017. REUTERS/Aaron P. Bernstein 

Sen. Elizabeth Warren (D-MA) speaks to Senate Minority Leader Chuck Schumer (D-NY) on the Senate steps, July 25, 2017. REUTERS/Eric Thayer 

Senate Democrats gather on the Senate steps with protesters, July 25, 2017. REUTERS/Eric Thayer 

Sen. John McCain arrives on Capitol Hill, July 25, 2017. REUTERS/Eric Thayer 

A still image from video shows Senator John McCain, who had been recuperating in Arizona after being diagnosed with brain cancer, acknowledging applause as he arrives on the floor of the Senate after returning to Washington for a vote on healthcare reform, July 25, 2017. SENATE TV/Handout via REUTERS 

A still image from video shows Senator John McCain speaking on the floor of the Senate after returning to Washington for a vote on healthcare reform, July 25, 2017. SENATE TV/Handout via REUTERS 

Senate Majority Leader Mitch McConnell leaves his office ahead of today's vote on the healthcare bill on Capitol Hill, July 25, 2017. REUTERS/Aaron P. Bernstein 

Senator Susan Collins (R-ME) speaks with reporters ahead of today's vote on the health care bill on Capitol Hill, July 25, 2017. REUTERS/Aaron P. Bernstein 

President Donald Trump calls on Republican senators to move forward and vote on a healthcare bill to replace the Affordable Care Act, as people negatively affected by the law stand behind him, in the Blue Room of the White House, July 24, 2017. REUTERS/Joshua Roberts 

Vice President Mike Pence and White House Chief of Staff Reince Priebus arrive on Capitol Hill, July 25, 2017. REUTERS/Eric Thayer 

Senator Ted Cruz speaks with reporters ahead of today's vote on the health care bill on Capitol Hill, July 25, 2017. REUTERS/Aaron P. Bernstein 

Senate Majority Leader Mitch McConnell looks down as President Donald Trump speaks during a meeting with Senate Republicans to discuss healthcare at the White House in Washington, July 19, 2017. REUTERS/Kevin Lamarque 

Healthcare activists are detained by Capitol Police after gathering to protest the Republican healthcare bill on Capitol Hill in Washington, July 19, 2017. REUTERS/Aaron P. Bernstein 

President Donald Trump speaks during a lunch meeting with Senate Republicans to discuss healthcare at the White House in Washington, July 19, 2017. From left are Senators Shelley Moore Capito (R-WV), Dean Heller (R-NV), Tim Scott (R-SC) and Lisa Murkowski (R-AK). REUTERS/Kevin Lamarque 

Healthcare activists gather outside the office of Senator Johnny Isakson (R-GA) to protest the Republican healthcare bill on Capitol Hill in Washington, July 19, 2017. REUTERS/Aaron P. Bernstein 

Maine Senator Susan Collins attends a lunch meeting hosted by President Donald Trump with other Senate Republicans to discuss healthcare at the White House in Washington, July 19, 2017. REUTERS/Kevin Lamarque 

Senator Dean Heller (R-NV) reacts as President Donald Trump speaks during a lunch meeting with Senate Republicans to discuss healthcare at the White House in Washington, July 19, 2017. REUTERS/Kevin Lamarque 

Healthcare activists are detained by Capitol Police after gathering to protest the Republican healthcare bill on Capitol Hill in Washington, July 19, 2017. REUTERS/Aaron P. Bernstein 

Republican leaders (L-R) Senate Majority Whip John Cornyn (R-TX), Majority Leader Mitch McConnell (R-KY) and John Thune, (R-SD) speak with the media after a lunch meeting with President Donald Trump to discuss healthcare at the White House in Washington, July 19, 2017. REUTERS/Carlos Barria 

Healthcare activists gather in the office of Senator Ron Johnson (R-WI) to protest the Republican healthcare bill on Capitol Hill in Washington, July 19, 2017. REUTERS/Aaron P. Bernstein 

Senate Majority Leader Mitch McConnell looks on during a news conference about the recently withdrawn healthcare bill on Capitol Hill in Washington, July 18, 2017. REUTERS/Aaron P. Bernstein 

Senator Rand Paul (R-KY) (C) speaks with reporters about healthcare legislation outside the Senate floor at the U.S. Capitol in Washington, July 18, 2017. REUTERS/Jonathan Ernst 

Senator Marco Rubio (R-FL) (C) speaks with reporters about healthcare legislation outside the Senate floor at the U.S. Capitol in Washington, July 18, 2017. REUTERS/Jonathan Ernst 

Healthcare activists protest to stop the Republican health care bill at Russell Senate Office Building on Capitol Hill in Washington, July 17, 2017. REUTERS/Yuri Gripas 

Senator Ted Cruz (R-TX) (R) arrives for Senate Majority Leader Mitch McConnell's (R-KY) (C) meeting of the Senate Republican caucus for an expected unveiling of Senate Republicans' revamped proposal to replace Obamacare health care legislation at the Capitol, July 13, 2017. REUTERS/Jonathan Ernst 

Healthcare activists are detained after a protest to stop the Republican health care bill at Russell Senate Office Building on Capitol Hill, July 17, 2017. REUTERS/Yuri Gripas 

Women dressed as handmaids from the novel, film and television series "The Handmaid's Tale" demonstrate against cuts for Planned Parenthood in the Republican U.S. Senate healthcare bill at the Capitol in Washington, June 27, 2017. REUTERS/Joshua Roberts 

President Donald Trump meets with Senate Republicans about healthcare in the East Room of the White House in Washington, June 27, 2017. Trump is flanked by Senators Susan Collins, L, (R-ME) and Sen. Lisa Murkowski, R, (R-AK). REUTERS/Kevin Lamarque 

Healthcare activists protest to stop the Republican health care bill at Russell Senate Office Building on Capitol Hill in Washington, July 10, 2017. REUTERS/Yuri Gripas 

Senate Majority Leader Senator Mitch McConnell (R-KY) attends a news conference following party policy lunch meeting at the U.S. Capitol in Washington. REUTERS/Carlos Barria 

A healthcare activist protests to stop the Republican health care bill at Russell Senate Office Building on Capitol Hill in Washington, July 17, 2017. REUTERS/Yuri Gripas 

Senator Lindsey Graham (R-SC) is surrounded by reporters as he departs a Senate Republican caucus meeting about an expected unveiling of Senate Republicans' revamped proposal to replace Obamacare health care legislation at the U.S. Capitol in Washington, July 13, 2017. REUTERS/Jonathan Ernst 

Healthcare activists protest to stop the Republican health care bill at Hart Senate Office Building on Capitol Hill in Washington, July 17, 2017. REUTERS/Yuri Gripas 

Senator Johnny Isakson (R-GA) arrives for a meeting of the Senate Republican caucus for an expected unveiling of Senate Republicans' revamped proposal to replace Obamacare health care legislation at the U.S. Capitol in Washington, July 13, 2017. REUTERS/Jonathan Ernst 

Healthcare activists are detained after a protest to stop the Republican health care bill at Hart Senate Office Building on Capitol Hill in Washington, July 17, 2017. REUTERS/Yuri Gripas 

Senator Ted Cruz (R-TX) (C) is surrounded by reporters as he arrives for a meeting of the Senate Republican caucus for an expected unveiling of Senate Republicans' revamped proposal to replace Obamacare health care legislation at the U.S. Capitol in Washington, July 13, 2017. REUTERS/Jonathan Ernst 

Speaker of the House Paul Ryan takes questions about the Senate health care bill during his weekly press conference on Capitol Hill in Washington, July 13, 2017. REUTERS/Aaron P. Bernstein 

Senator Shelley Moore Capito (R-WV) (L) leaves a meeting of the Senate Republican caucus for the unveiling of Senate Republicans' revamped proposal to replace Obamacare health care legislation at the U.S. Capitol in Washington, July 13, 2017. REUTERS/Carlos Barria 

Senator Rand Paul (R-KY) leaves after attending a party policy lunch meeting at the U.S. Capitol in Washington, July 11, 2017. REUTERS/Carlos Barria 

Healthcare activists protest to stop the Republican health care bill at Russell Senate Office Building on Capitol Hill in Washington, July 10, 2017. REUTERS/Yuri Gripas 

Sen. John Thune (R-SD) speaks with reporters about the Senate health care bill on Capitol Hill in Washington, July 13, 2017. REUTERS/Aaron P. Bernstein