There is a growing crack in the notion that Americans snap back to business as usual after every mass shooting. Turns out millions of us, unfortunately, don’t.
Under current federal laws, high-capacity ammunition magazines and semi-automatic weapons are legal, after the Federal Assault Weapons Ban expired in 2004. Other weapons, such as machine guns and other automatic weapons, are, under most circumstances, prohibited. The sale of firearms is also regulated, but unlicensed firearm dealers are exempt from the federally-mandated background checks on potential gun buyers.