The British had discouraged Jewish immigration into the Palestinian mandate, in part because of the romantic attachment of many British officers to the Arabs for their fighting spirit. Jews were despised as bankers, shopkeepers and intellectuals. Few of us have anything like a clear picture of how the world viewed Jews in 1940. Indeed, this was generally not much different from the the view of ordinary Nazi party member, who only wished to be rid of German Jews and to take their jobs and property.
A goal which was 90+% accomplished in Germany before September 1939.
Nobody foresaw fully in 1939 what would happen throughout Nazi controlled Europe in, say, 1942.