WASHINGTON, DC - SEPTEMBER 06: House Majority Leader Kevin McCarthy (R) (R-CA) leaves the office of Speaker of the House Paul Ryan at the U.S. Capitol September 6, 2016 in Washington, DC. Congress returned from a seven-week break today and are expected to take up legislation related to the Zika virus outbreak, continued funding for the federal government and other matters. (Photo by Win McNamee/Getty Images)

WASHINGTON, DC - SEPTEMBER 06: U.S. Senate Majority Leader Mitch McConnell (R-KY) (R) walks back to his office with Senate Republican Secretary Laura Dove at the U.S. Capitol September 6, 2016 in Washington, DC. Congress returned from a seven-week break and will take up legislation related to the Zika virus outbreak, continued funding for the federal government and other matters. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 06: U.S. Senate Majority Leader Mitch McConnell (R-KY) (R) walks back to his office with Senate Republican Secretary Laura Dove at the U.S. Capitol September 6, 2016 in Washington, DC. Congress returned from a seven-week break and will take up legislation related to the Zika virus outbreak, continued funding for the federal government and other matters. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 06: U.S. Senate Majority Leader Mitch McConnell (R-KY) (R) walks back to his office with Senate Republican Secretary Laura Dove at the U.S. Capitol September 6, 2016 in Washington, DC. Congress returned from a seven-week break and will take up legislation related to the Zika virus outbreak, continued funding for the federal government and other matters. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 06: U.S. Senate Majority Leader Mitch McConnell (R-KY) (L) heads to the Senate chamber with Senate Republican Secretary Laura Dove at the U.S. Capitol September 6, 2016 in Washington, DC. Congress returned from a seven-week break and will take up legislation related to the Zika virus outbreak, continued funding for the federal government and other matters. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 06: U.S. Senate Majority Leader Mitch McConnell (R-KY) (L) heads to the Senate chamber with Senate Republican Secretary Laura Dove at the U.S. Capitol September 6, 2016 in Washington, DC. Congress returned from a seven-week break and will take up legislation related to the Zika virus outbreak, continued funding for the federal government and other matters. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 06: U.S. Senate Majority Leader Mitch McConnell (R-KY) (3rd L) heads to the Senate chamber with Senate Republican Secretary Laura Dove (R) at the U.S. Capitol September 6, 2016 in Washington, DC. Congress returned from a seven-week break and will take up legislation related to the Zika virus outbreak, continued funding for the federal government and other matters. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 06: Tourists move past the U.S. Capitol September 6, 2016 in Washington, DC. Congress returns to work today following a seven-week break. (Photo by Chip Somodevilla/Getty Images)