Can someone explain to me how the Selective Service is constitutional? I know Congress "shall have Power To... provide for calling forth the Militia to execute the Laws of the Union", but that's only a call, not a legal requirement for anyone to answer the call. The argument seems untenable to me. Not to mention that it's a gross violation of individual freedom, and that if you can't get people to fight for their country then maybe there's something wrong with the country.
It’s the same reason there is a different legal system in the military than for everyone else.
Sometimes, you need to round up all the men and start killing folks - or everyone else dies. Such is life. Making it easy to find them is a basic operational best practice.
