Major cruise operators said yesterday that they will temporarily suspend stops at ports in Mexico because of escalating concerns over the swine flu crisis. Three ships operated by Carnival Corp. – including one that departed San Diego on Sunday and was to visit Ensenada – abruptly skipped scheduled stops in Mexico yesterday. Later in the day, the Miami-based cruise operator announced that it will expand the Mexican port ban for all voyages departing tomorrow through Monday. Within hours of Carnival's move, rival Royal Caribbean International said it will suspend port calls in Mexico for four ships. Norwegian Cruise Line also...