Twin decisions earlier this year by the U.S. Supreme Court striking down the federal Defense of Marriage Act and invalidating Proposition 8, the California measure that outlawed same-sex marriage, have pushed judges in several states to rule against bans on gay marriage. The state Supreme Courts in New Mexico and New Jersey both declared same-sex marriage legal, and on Monday, a federal judge in Ohio said the state must recognize same-sex marriages performed in other states, though in a narrow ruling that applies only to death certificates.