Because sometimes just shouting “Shall not be infringed!” is not enough. (usually)
Briefs filed in MS Supreme Court supporting Mississippi’s “HB2” Open Carry law (in docketed order):
Florida Carry, Inc. – Florida Carry Amicus Brief
National Rifle Association – NRA Amicus Brief
Citizen Supporters of HB2 – Citizen Supporters of HB2 Amicus Brief
80 Named MS Legislators – Named MS Legislators Amicus Brief
MS Governor Phil Bryant – Gov. Bryant Amicus Brief
Only one of the briefs failed to recognize that the legislators do not have the constitutional authority to ban open carry. Hint: it was not the legislators’ brief.
No time to read all briefs, wild guess – NRA?