California, of course, is the complicated one: In 2008, voters approved Prop 8, which says that only marriages between a man and a woman are valid there. That was challenged by lawsuits, but the state Supreme Court rejected them. Then a federal judge overturned Prop 8 in a separate case, and the U.S. Court of Appeals for the 9th Circuit is considering that ruling. Same-sex couples that were married before Proposition 8 passed are still recognized as such, though new same-sex marriages aren't permitted.