On May 13, 1939, the luxury liner St. Louis sailed from Hamburg, one of the last ships to leave Nazi Germany before World War II erupted. Aboard were 937 Jews-some had already been in concentration camps-who believed they had bought visas to enter Cuba. The voyage of the damned had begun. Before the St. Louis was halfway across the Atlantic, a power struggle ensued between the corrupt Cuban immigration minister who issued the visas and his superior, President Bru. The outcome: The refugees would