In this March 7, 2012, file photo, Illinois gun owners and supporters file out National Rifle Association applications while participating in an Illinois Gun Owners Lobby Day convention before marching to the Illinois state Capitol in Springfield, Ill. (AP Photo/Seth Perlman, File)
The National Rifle Association has awarded over $600,000 in grants to support school security projects in 23 states, organized under the organization's School Shield program. (Image courtesy of NRA)
National Rifle Association (NRA) Executive Vice President and Chief Executive Officer Wayne LaPierre speaks at the Conservative Political Action Conference (CPAC), Friday, Feb. 24, 2017, in Oxon Hill, Md. (AP Photo/Alex Brandon)
National Rifle Association spokesperson Dana Loesch answers a question while sitting next to Broward Sheriff Scott Israel during a CNN town hall meeting, Wednesday, Feb. 21, 2018, at the BB&T Center, in Sunrise, Fla. (Michael Laughlin/South Florida Sun-Sentinel via AP)
National Rifle Association Executive Vice President Wayne LaPierre speaks ahead of President Donald Trump during 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)
National Rifle Association (NRA) Executive Vice President and Chief Executive Officer Wayne LaPierre speaks at the Conservative Political Action Conference (CPAC), Friday, Feb. 24, 2017, in Oxon Hill, Md. (AP Photo/Alex Brandon) ** FILE **
Chris Cox, executive director of the Institute for Legislative Action, the political and lobbying arm of the National Rifle Association, speaks during the annual meeting of members at the NRA convention Saturday, April 11, 2015, in Nashville, Tenn. (AP Photo/Mark Humphrey) ** FILE **
Republican presidential candidate Donald Trump gestures to a his camouflaged "Make America Great" hat as he discuses his support by the National Rifle Association at a campaign rally at the Redding Municipal Airport Friday, June 3, 2016, in Redding, Calif. (AP Photo/Rich Pedroncelli) ** FILE **
National Rifle Association executive director Chris W. Cox speaks at the National Rifle Association convention Saturday, May 21, 2016, in Louisville, Ky. (AP Photo/Mark Humphrey)
National Rifle Association executive director Chris W. Cox speaks at the National Rifle Association convention Saturday, May 21, 2016, in Louisville, Ky. (AP Photo/Mark Humphrey)
The scope of the National Rifle Association's annual meeting is huge; the event drew 80,000 people in 2015, with more expected in 2016. (NRA image for Inside the Beltway)
Chris Cox, executive director of the Institute for Legislative Action, the political and lobbying arm of the National Rifle Association, speaks during the annual meeting of members at the NRA convention Saturday, April 11, 2015, in Nashville, Tenn. (AP Photo/Mark Humphrey) ** FILE **
National Rifle Association members applaud a speech during the annual meeting of members at the organization's Nashville, Tennessee, convention in April. The NRA is planning a major voter-outreach program for the 2016 presidential election, hoping to capitalize on Americans' growing belief that gun ownership will make them safer. (Associated Press)
Wayne LaPierre, left, executive vice president of the National Rifle Association, speaks during the annual meeting of members at the NRA convention Saturday, April 11, 2015, in Nashville, Tenn. At right is Jim Porter, NRA president. (AP Photo/Mark Humphrey)