FILE - In this April 13, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney speaks at the National Rifle Association convention in St. Louis. Repu

 

              FILE - In this April 13, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney speaks at the National Rifle Association convention in St. Louis. Repu
FILE - In this April 13, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney speaks at the National Rifle Association convention in St. Louis. Republicans have strengthened the pro-gun-rights portion of their party platform, including a new call for unlimited bullet capacities in guns in a defiant response to criticisms that followed mass shootings at a Colorado cinema and an Arizona congresswoman's gathering. (AP Photo/Michael Conroy, File)