A military-readiness group is urging the Supreme Court not to take up a petition from a men’s rights group that asks the court to strike down the law that authorizes military conscription solely for men as unconstitutional. The case is National Coalition for Men v. Selective Service System, court file 20-928. Based in San Diego, the National Coalition for Men (NCFM) was “founded in 1977 upon the realization that men needed a unified voice in addressing issues concerning men and boys,” according to its website. The NCFM is represented in the case by the American Civil Liberties Union (ACLU), which argues that ending the men-only registration requirement would undo one of the last examples of overt sex discrimination in federal law after the Supreme Court allowed gay marriage and found that last year employment discrimination against gays and transgender individuals was illegal. In 1981 the Supreme Court ruled in Rostker …