WASHINGTON, DC - JUNE 22: House Speaker Paul Ryan (R-WI) discusses the release of the House Republican plank on health care reform at The American Enterprise Institute for Public Policy Research on June 22, 2016 in Washington, DC. (Photo by Allison Shelley/Getty Images)

WASHINGTON, DC - JUNE 22: House Majority Whip Steve Scalise (R-LA) discusses the release of the House Republican plank on health care reform at The American Enterprise Institute for Public Policy Research on June 22, 2016 in Washington, DC. (Photo by Allison Shelley/Getty Images)

WASHINGTON, DC - JUNE 22: House Speaker Paul Ryan (R-WI) discusses the release of the House Republican plank on health care reform at The American Enterprise Institute for Public Policy Research on June 22, 2016 in Washington, DC. (Photo by Allison Shelley/Getty Images)

WASHINGTON, DC - JUNE 22: U.S. House Minority Leader Rep. Nancy Pelosi (D-CA) (3rd L) speaks as Assistant Minority Leader Rep. James Clyburn (D-SC) (4th L), Rep. Steve Israel (D-NY) (L) and Brady Campaign president Dan Gross (R) listen during a news conference on gun control June 22, 2016 on Capitol Hill in Washington, DC. House Democrats are staging a sit-in on the House floor to demand Speaker Rep. Paul Ryan (R-WI) not to recess the House without voting on legislation including the bipartisan 'No Fly, No Buy' legislation and a universal background check bill. (Photo by Alex Wong/Getty Images)

This video grab courtsy of CSPAN shows a sit-in at the US House of Represenatives on June 22, 2016 in Washington, DC. US Democrats staged a rare sit-in Wednesday in the House of Representatives, demanding that the Republican-led body vote on gun-control legislation following the Orlando nightclub massacre."We have to occupy the floor of the House until there is action," Democratic Congressman John Lewis, a civil rights icon who marched with Reverend Martin Luther King Jr in the 1960s, said before he and dozens of colleagues sat down on the carpeted well of the chamber.The dramatic action came just as the House presiding officer moved to declare the body in recess. / AFP PHOTO / CSPAN / HandoutHANDOUT/AFP/Getty Images

Bonnie Lautenberg (2L) and lawmakers listen as US President Barack Obama speaks before signing H.R. 2576, the "Frank R. Lautenberg Chemical Safety for the 21st Century Act at the White House campus June 22, 2016 in Washington, DC. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

US President Barack Obama speaks before signing H.R. 2576 on the White House campus June 22, 2016 in Washington, DC. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

US President Barack Obama applauds with lawmakers after signing H.R. 2576, the "Frank R. Lautenberg Chemical Safety for the 21st Century Act at the White House campus June 22, 2016 in Washington, DC. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images