Washington — THE Congressional vote on Monday allowing Terri Schiavo's parents to take her case to a federal court underscores the success of Christian conservatives in defining the last election as having been decided by moral values. But political strategists may not want to bank too heavily on this assessment. Especially on life-and-death issues, support for moral values among Americans must contend with a deeply held pragmatism. It is rare for Washington politicians to buck public opinion. An ABC News poll conducted on Sunday found a 63 percent to 28 percent majority supporting removal of Ms. Schiavo's feeding tube. The...