In the wake of the tragic shooting in Tucson, Arizona, earlier this month, the calls for gun-control legislation have already begun. But the National Rifle Association's traditional ability to shoot these bills down may be significantly reduced in the future. ARLINGTON, Virginia - After the Virginia Tech shootings in 2007, when 32 people were slaughtered by a mentally disturbed young man wielding two semi-automatic pistols, calls for enhanced gun control were met with... (GunPolicy.org)