The second amendment to the US Constitution begins:
A well regulated Militia, being necessary to the security of a free State,...
This portion of the amendment seems always to be forgotten when the Learned Justices consider gun control laws - even the watered-down pap that gets passed by the NRA-fearing politicians in Washington and all the state capitols and municipal governments. The only portion of the amendment that seems to arise in court cases brought by NRA minions is the last half:
...the right of the people to keep and bear Arms, shall not be infringed.
The US Department of Defense should add a fifth branch: Militia, and populate it with every firearms-owning individual in the country, along with their beloved firearms, through the Selective Service System.