“In fact, the Supreme Court, in Rostker v. Goldberg (1981), has used the fact that men and women have different roles as justification for rejecting constitutional objections to the all-male draft.”
But yet, Obama has demanded that there not be different roles. So ergo, sign up.
From Rostker v. Goldberg:,p.
In the majority opinion, Justice William Rehnquist wrote “[t]he existence of the combat restrictions clearly indicates the basis for Congress’ decision to exempt women from registration. The purpose of registration was to prepare for a draft of combat troops. Since women are excluded from combat, Congress concluded that they would not be needed in the event of a draft, and therefore decided not to register them.” Implicit in the obiter dicta of the ruling was to hold valid the statutory restrictions on gender discrimination in assigning combat roles. Men and women, because of the combat restrictions on women, are simply not similarly situated for purposes of a draft or registration for a draft therefore, there is no violation of the Due Process Clause. The Supreme Court therefore reversed the decision of the district court.