WASHINGTON, DC - JUNE 22: U.S. Speaker of the House Rep. Paul Ryan (R-WI) (4th L) arrives at a House Republican Conference meeting June 22, 2016 at the Capitol in Washington, DC. House GOPs held a conference meeting to discuss the current situation of a gun control sit-in protest on the House floor staged by House Democrat. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JUNE 22: A congressional aide wheels in boxes of pizza to a House Republican Conference meeting June 22, 2016 at the Capitol in Washington, DC. House GOPs held a conference meeting to discuss the current situation of a gun control sit-in protest on the House floor staged by House Democrat. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JUNE 22: U.S. Speaker of the House Rep. Paul Ryan (R-WI) (R) arrives at a House Republican Conference meeting June 22, 2016 at the Capitol in Washington, DC. House GOPs held a conference meeting to discuss the current situation of a gun control sit-in protest on the House floor staged by House Democrat. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JUNE 22: U.S. House Majority Leader Rep. Kevin McCarthy (R-CA) (2nd L) arrives at a House Republican Conference meeting June 22, 2016 at the Capitol in Washington, DC. House GOPs held a conference meeting to discuss the current situation of a gun control sit-in protest on the House floor staged by House Democrat. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JUNE 22: U.S. House Majority Whip Rep. Steve Scalise (R-LA) (R) arrives at a House Republican Conference meeting June 22, 2016 at the Capitol in Washington, DC. House GOPs held a conference meeting to discuss the current situation of a gun control sit-in protest on the House floor staged by House Democrat. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JUNE 22: A congressional aide wheels in boxes of pizza to a House Republican Conference meeting June 22, 2016 at the Capitol in Washington, DC. House GOPs held a conference meeting to discuss the current situation of a gun control sit-in protest on the House floor staged by House Democrat. (Photo by Alex Wong/Getty Images)

Facebook Chief Operating Officer Sheryl Sandberg speaks during a discussion with AEI President Arthur Brooks at the The American Enterprise Institute for Public Policy Research (AEI) on June 22, 2016 in Washington, DC. / AFP PHOTO / MANDEL NGANMANDEL NGAN/AFP/Getty Images

WASHINGTON, DC - JUNE 22: Facebook's Chief Operating Officer Sheryl Sandberg speaks with AEI president Arthur C. Brooks during a public conversation on Facebook's work on 'breakthrough innovations that seek to open up the world' at The American Enterprise Institute for Public Policy Research on June 22, 2016 in Washington, DC. (Photo by Allison Shelley/Getty Images)