Within academic circles, terms such as “nation” and “Canada” are highly contested. They are loaded with historical, cultural and linguistic meaning, and thus welcome deep investigation which often produces heated debate. The history of Canadian immigration policy is a particularly interesting and contested subject that challenges scholars to investigate the meaning of citizenship and national identity. This is perhaps most evident during a unique period in the immediate postwar years, when the proverbial gates to Canada became “vulnerable” to Cold War Communism.