After Canada's rejection (following refusals from Cuba and the United States), the St. Louis was forced to return to Europe where, according to the United States Holocaust Memorial Museum, 254 of the passengers perished at the hands of the Nazis.
After being denied entry by Canada, along with rejections from Cuba and the U.S., the St. Louis was forced to return to Europe, where the consequences of this decision ultimately led to the loss of 254 lives at the hands of the Nazis.