WASHINGTON, DC - JULY 12: U.S. Represetnative Brenda Lawrence joins members of MoveOn.org and members of Congress at an event to demand congress renew an assualt weapons ban, along with delivering more than one million signed petitions, at United States Capitol Building on July 12, 2016 in Washington, DC. (Photo by Leigh Vogel/Getty Images for MoveOn.org)

WASHINGTON, DC - JULY 12: Congresswoman Bonnie Watson Coleman joins members of MoveOn.org and members of Congress at an event to demand congress renew an assualt weapons ban, along with delivering more than one million signed petitions, at United States Capitol Building on July 12, 2016 in Washington, DC. (Photo by Leigh Vogel/Getty Images for MoveOn.org)

WASHINGTON, DC - JULY 12: Congresswoman Rosa L. DeLauro joins members of MoveOn.org and members of Congress at an event to demand congress renew an assualt weapons ban, along with delivering more than one million signed petitions, at United States Capitol Building on July 12, 2016 in Washington, DC. (Photo by Leigh Vogel/Getty Images for MoveOn.org)

WASHINGTON, DC - JULY 12: U.S. Senate Majority Leader Sen. Mitch McConnell (R-KY) (R) speaks as Sen. John Thune (R-SD) (L) listens during a news briefing after the Republican weekly policy luncheon July 12, 2016 at the Capitol in Washington, DC. Senate GOPs held a weekly policy luncheon to discuss the Republican agenda. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 12: U.S. Senate Majority Leader Sen. Mitch McConnell (R-KY) speaks during a news briefing after the Republican weekly policy luncheon July 12, 2016 at the Capitol in Washington, DC. Senate GOPs held a weekly policy luncheon to discuss the Republican agenda. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 12: U.S. Daniel Sullivan (R-AK) (R) speaks as Sen. John Thune (R-SD) (L) listens during a news briefing after the Republican weekly policy luncheon July 12, 2016 at the Capitol in Washington, DC. Senate GOPs held a weekly policy luncheon to discuss the Republican agenda. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 12: U.S. Sen. John Thune (R-SD) speaks during a news briefing after the Republican weekly policy luncheon July 12, 2016 at the Capitol in Washington, DC. Senate GOPs held a weekly policy luncheon to discuss the Republican agenda. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 12: U.S. Senate Majority Leader Sen. Mitch McConnell (R-KY) (2nd L) speaks as Sen. John Thune (R-SD) (L) and Sen. Daniel Sullivan (R-AK) (R) listen during a news briefing after the Republican weekly policy luncheon July 12, 2016 at the Capitol in Washington, DC. Senate GOPs held a weekly policy luncheon to discuss the Republican agenda. (Photo by Alex Wong/Getty Images)