Do you agree that the Militia in 1787 consisted of all able bodied men?
Did the Founders consider an armed citizenry necessary to national security?
Does it make sense that the Founders assigned control of the Militia to Congress and also meant that States could endanger national security by disarming citizens?
Not only is there no case law, there's no human being supporting this argument. It's perhaps not the way I would have done it, but the fed could always arm the mil the same way it armed the regular army. And again, IF!!!!!!!!!!!!! the fed gov passed a law such that it required all men be armed for mil service, I've already said I'd like it. No such law exists now, and the states have the power to regulate firearms.