Weapons laws and regulations

President Donald Trump gives a thumbs-up as speaks at the National Rifle Association-ILA Leadership Forum, Friday, April 28, 2017, in Atlanta. The NRA is holding its 146th annual meetings and exhibits forum at the Georgia World Congress Center. (AP Photo/Mike Stewart)

NRA attendees Bill and Karen Geittman watch a video of President Donald Trump while waiting for him to arrive for a keynote at the NRA-ILA Leadership Forum on Friday, April 28, 2017, in Atlanta. (Curtis Compton/Atlanta Journal-Constitution via AP)

John Feinblatt, president of Everytown for Gun Safety, left, and Shannon Watts, founder of Moms Demand Action for Gun Sense in America, pose for a photograph in Washington, Wednesday, April 26, 2017. (AP Photo/J. David Ake)

John Feinblatt, president of Everytown for Gun Safety, left, and Shannon Watts, founder of Moms Demand Action for Gun Sense in America, pose for a photograph in Washington, Wednesday, April 26, 2017. (AP Photo/J. David Ake)

Israeli Defense Minister Avigdor Lieberman, left, and U.S. Defense Secretary Jim Mattis takes seats for a meeting at the Defense Ministry in Tel Aviv, Israel, Friday, April 21, 2017. (Jonathan Ernst/Pool Photo via AP)

Israeli Defense Minister Avigdor Lieberman, left, and U.S. Defense Secretary Jim Mattis takes seats for a meeting at the Defense Ministry in Tel Aviv, Israel, Friday, April 21, 2017. (Jonathan Ernst/Pool Photo via AP)

FILE - In this June 13, 2013, file photo, hands from Daniel Zambrano of Tijuana, Mexico, hold on to the bars that make up the border wall separating the U.S. and Mexico as the border meets the Pacific Ocean in San Diego. One potential bidder on President Donald Trump's border wall with Mexico wanted to know if the government would help if its workers came under "hostile attack." With bids due Tuesday, April 4, 2017, on the first design contracts, companies are preparing for the worst if they get the potentially lucrative but controversial job. (AP Photo/Gregory Bull, File)

FILE - In this May 11, 2016, file photo, Tim Foley shows how to climb a section of the border wall separating Mexico and the United States near where it ends as journalists Chitose Nakagawa, right, and Marcie Mieko Kagawa look on in Sasabe, Ariz. Foley, a former construction foreman, founded Arizona Border Recon, a group of armed volunteers who dedicate themselves to border surveillance. With bids due Tuesday, April 4, 2017, on the first border wall design contracts, companies are preparing for the worst if they get the potentially lucrative but controversial job. (AP Photo/Gregory Bull, File)

FILE - In this May 11, 2016, file photo, Tim Foley shows how to climb a section of the border wall separating Mexico and the United States near where it ends as journalists Chitose Nakagawa, right, and Marcie Mieko Kagawa look on in Sasabe, Ariz. Foley, a former construction foreman, founded Arizona Border Recon, a group of armed volunteers who dedicate themselves to border surveillance. With bids due Tuesday, April 4, 2017, on the first border wall design contracts, companies are preparing for the worst if they get the potentially lucrative but controversial job. (AP Photo/Gregory Bull, File)