A federal court in San Francisco on Wednesday overturned the state's voter-approved initiative banning same-sex marriages, in a landmark case that could force the U.S. Supreme Court eventually to decide if gays have a constitutional right to marry. District court Judge Vaughn Walker ruled that 2008's Proposition 8 violated the constitutional guarantees to equal protection and due process because it singles out gays and lesbians for denial of a marriage license. "The evidence shows Proposition 8 does nothing more than enshrine in the California Constitution the notion that opposite sex couples are superior to same-sex couples," wrote Judge Walker in...