Actually it is ...just not directly. And there is a small window -- age 18-25. Once you turn 26 you forever screwed...The unregistered cannot get financial aid for college, no US citizenship, no Federal Job, no security clearance, cannot work for some companies if they have government contracts, no job for USPS, and in 8 states you cannot enroll in college at all. In OHIO, as a state resident, you pay out of state tuition for college. Many states mirror Federal laws regards aid so no state aid for school or job training. That said, a Federal judge has declared the Male only Selective Service Registration unconstitutional and Congress needs to eliminate or make it mandatory for all males AND females -- esp since they can now serve in combat roles previously excluded...Well, registration isn't enforced. Army...volunteered...1968!