Some want to put the "fault" back in "no-fault." Others just want to "close the exit doors a little." Though particulars vary, challenges to no-fault divorce are multiplying in state legislatures nationwide. None have actually changed the no-fault divorce laws that have spread to every state since the 1970s - laws that allow one spouse to end a marriage without needing to accuse the other of evil, or "find fault." But since the late 1990s, efforts have intensified to require such features as waiting periods and couple counseling, or even to eliminate no-fault divorces for families with young children. "It...