National Rifle Association

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Louisiana Gov. Bobby Jindal speaks during the leadership forum at the National Rifle Association's annual convention Friday, April 25, 2014, in Indianapolis. (AP Photo/AJ Mast)

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Indianapolis Colts kicker Adam Vinatieri speaks during the leadership forum at the National Rifle Association's annual convention in Friday, April 25, 2014 in Indianapolis. (AP Photo/AJ Mast)

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** FILE ** Gov. Mike Pence waves after speaking at the leadership forum at the National Rifle Association's annual convention in Friday, April 25, 2014, in Indianapolis. (AP Photo/AJ Mast)

National Rifle Association (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. Several potential Republican contenders for president planned on courting gun-rights supporters at the NRA's annual convention Friday. (AP Photo/AJ Mast)