I've given you adult responses and you still don't understand them. You use the Act out of context,just as lincoln did. The intent of the Act covered a small section of one state. You seriously cannot believe that when that was written, Washington meant for it to be applied to one half of the nation
The brillant thing (or one of them) about the Constitution is that it takes human frailty into account.
What you CSA apolgists posit is some impossible nirvana where everyone can act like small children without any consequence.
The Constitution MUST be interpreted and implemented by men. You seem to discount that. Some person or group of people MUST have the final say. And the Supreme Court ruled that the Militia Act, among other things, gave the power to the government to resist insurrection. The fact that the law was originally passed to put down a small insurection in one state doesn't change the words.
Really, the slave holders should have read the Constitution and the laws a bit more carefully and they wouldn't have had their applecarts upset so badly.
Walt