Um. From my recollection, aren't males upon reaching age 18 required by federal law to sign up with selective service? And it has not been used since Vietnam.
They were, until Ford did away with it in 76, about 2 months before my 18th birthday. When registering for Selective Services started again, they wanted 18, 19, and 20 year olds, I was 21.
I'm amoung the privileged few that never had to register.