A federal judge has ruled that a men-only military draft is unconstitutional, but he stopped short of ordering the Selective Service System to register women. The Houston judge sided with a San Diego men’s advocacy group that challenged the government’s practice of having only men sign up for the draft, citing sex discrimination in violation of the Fifth Amendment’s equal protection clause. “This case balances on the tension between the constitutionally enshrined power of Congress to raise armies and the constitutional mandate that no person be denied the equal protection of the law,” wrote U.S.