(Washington, DC) -- A traditional-marriage advocacy group is asking the U.S. Supreme Court to issue a stay on a recent ruling overturning Oregon's law against same-sex marriage. The group, known as the National Organization for Marriage, says it has filed a motion with Supreme Court Justice Anthony Kennedy to issue a stay on the case. U.S. District Judge Michael McShane overturned Oregon's ban on same-sex marriage last week, saying it's unconstitutional. Oregon Attorney General Ellen Rosenblum has refused to defend the ban, calling it "indefensible."