Sen. Ted Cruz, R-Texas, walks onto the stage to speak at the National Rifle Association convention Friday, April 10, 2015, in Nashville, Tenn. (AP Photo/Mark Humphrey) ** FILE **
Louisiana Gov. Bobby Jindal, left, talks with reporters at the National Rifle Association convention Friday, April 10, 2015, in Nashville, Tenn. (AP Photo/Mark Humphrey)
Former Ohio Secretary of State Ken Blackwell speaks at the National Rifle Association convention in St. Louis, Friday, April 13, 2012. (AP Photo/Michael Conroy)
Bundy Cobb, who is certified by the National Rifle Association in firearms training, is upset after he went for early voting in Douglas County, Georgia, on Friday and was ordered to remove his National Rifle Association hat before he was allowed to vote. (My Fox Atlanta)
Wayne LaPierre, executive vice president of the National Rifle Association, accepted an ice bucket challenge Saturday from former Democratic Rep. Gabrielle Giffords. (YouTube)
Pat Kirchner of Kankakee, Ill., is an example that it's not only men who are interested in the National Rifle Association and gun rights issues. Women, including Sarah Palin, made their voices heard at the annual meeting in Indianapolis over the weekend.
Attendees look over a pistol display at the National Rifle Association's annual convention in Friday, April 25, 2014 in Indianapolis. (AP Photo/AJ Mast)
National Edition News cover for April 26, 2014 - NRA gears up to mark a year of victories: NRA Executive Vice President and Chief Executive Officer Wayne LaPierre speaks during the leadership forum at the National Rifle Association's annual convention Friday, April 25, 2014 in Indianapolis. (AP Photo/AJ Mast)
Former Pennsylvania Sen. Rick Santorum speaks during the leadership forum at the National Rifle Association's annual convention Friday, April 25, 2014, in Indianapolis. Several potential Republican contenders for president were courting gun-rights supporters at the convention Friday. (AP Photo/AJ Mast)