Comment: Are you SURE this isn't a law???

Even though the Secretary of Defense has decided to allow women in combat jobs, the law has not been changed to include this. Consequently, only men are currently required to register by law with Selective Service during ages 18 thru 25. Women still do not register.

http://www.sss.gov/default.htm

The Selective Service System is authorized by the Article I, Section 8 of the United States Constitution which says Congress "shall have Power To ... raise and support Armies [and] To provide and maintain a Navy;" The Selective Service Act was the law which established the Selective Service System under these provisions.

Still, the act has been challenged in light of the Thirteenth Amendment to the United States Constitution which prohibits "involuntary servitude". These challenges, however, have not been supported by the courts; as the Supreme Court stated in Butler v. Perry (1916):

The amendment was adopted with reference to conditions existing since the foundation of our government, and the term 'involuntary servitude' was intended to cover those forms of compulsory labor akin to African slavery which, in practical operation, would tend to produce like undesirable results. It introduced no novel doctrine with respect of services always treated as exceptional, and certainly was not intended to interdict enforcement of those duties which individuals owe to the state, such as services in the army, militia, on the jury, etc.

During the First World War, the Supreme Court ruled in Arver v. United States (1918), also known as the Selective Draft Law Cases, that the draft did not violate the Constitution.

Later, during the Vietnam War, a lower appellate court also concluded that the draft was constitutional in United States v. Holmes (1968)

http://en.wikipedia.org/wiki/Selective_Service_System#Legal_...

It seems to me that the federal government, as well as the courts, sure seem to think that IT IS in fact A LAW.