SAN FRANCISCO, Aug. 17 - A member of the California Army National Guard filed suit in federal court here Tuesday challenging the Bush administration's so-called stop-loss policy, asserting that his pending deployment to Iraq "bears no relation to the threat of terrorism against the United States." Under stop-loss, military personnel can be prevented from leaving the armed forces upon completing their enlistment terms. The plaintiff in this case, identified as John Doe to protect his privacy, is believed to be the first soldier to challenge the legality of the policy's application to deployment in Iraq. The soldier is described in...