AcknowledgmentsList of AbbreviationsList of Tables and ChartsI. Foundations1. Introduction: On the Comparative Politics of Migration1.1 Research Question/s1.2 Research Design1.2.1 On Research Strategy: Comparative-Historical Analysis and the Identification of Critical Junctures1.2.2 On Units of Analysis: States and Politics1.2.3 On the Case for my Cases: The Selection of Major Immigration Countries1.3 Structure and Line of Approach2. Understanding Immigration, Citizenship, and Integration: Theories and Conceptualizations of Core Concepts2.1 On Immigration Politics2.1.1 An Overview of Migration Theory2.1.2 Theories on Immigration and the State2.2.3 Conceptualizing Immigration Politics2.2 On Citizenship Politics2.2.1 An Overview of Citizenship Theory2.2.2 Theories on Citizenship and the State2.2.3 Conceptualizing Citizenship Politics2.3 On Integration Politics2.3.1 An Overview of Social Cohesion and Integration Theories2.3.2 Theories on Immigrant Integration and the State2.3.3 Conceptualizing Integration Politics2.4 The Nexus between Immigration, Citizenship, and Integration Politics2.4.1 Conceptualizing the Nexus between Immigration, Citizenship, and Integration Politics2.4.2 The Immigration, Citizenship, and Integration Nexus as an Analytical Tool in Comparative-Historical Research3. Methodology: On Comparison, Comparative-Historical Analysis and Expert Interviews3.1 Research Approach: On Comparison in Political Science and Migration Research3.1.1 Why we compare: On Comparative Logics and Epistemic Tensions 3.1.2 How we compare: On the Selection of Cases and Comparative Strategies3.1.3 \'Bringing the State back in\': On the State as a Unit of Analysis in Migration Research3.2 Comparative-Historical Analysis: Situating this Project within the Research Paradigm3.2.1 What is Comparative-Historical Analysis3.2.2 Time in Comparative-Historical Analysis: Taking History Seriously3.2.3 The Application of Comparative-Historical Analysis in this Research Project: Critical Junctures3.3 Empirical Analysis: Secondary Literature Analysis and Expert Interviews3.3.1 Secondary Literature Analysis3.3.2 Expert Interviews: On the Use of Narrative Accounts for this Research Project3.4 Interim Conclusion: CHA, Critical Junctures, and Expert Interviews4. State of the Art: Contributions and Gaps in Comparative Migration Research on Canada, France, and Germany4.1 An Overview of Migration History and Politics4.1.1 Historical Phases of Global Migration Movements4.1.2 Statistical Data on Migration Politics in Canada, France, and Germany4.2 Comparative Analyses of Migration Politics4.2.1 Typologies, Categorizations and Indices of the Country Cases based on their Migration Politics4.2.2 Research in Comparative-Historical Analysis on Migration Politics4.3 Interim Conclusion: Contributions and Gaps in the LiteratureII: Analysis: The Historical Trajectories of Politics of \'Us\' and \'Them\' in Canada, France, and Germany5. Manifesting Unity, Belonging, and Exclusion: Migration Politics in the Postwar Years5.1 Introduction5.2 Canada - Becoming Canadian, 1945-19525.2.1 Pre-History: Creating white European Canada5.2.2 Manifesting a new Canadian Self-Conception through Citizenship5.2.3 Canada becomes Canadian5.2 France - Making a Comeback, 1945-19505.3.1 Pre-History: Demographic Struggles and the Establishment of Europe\'s Oldest Immigration Country5.3.2 The Return of a Durable Immigration Country, 1945-19505.3.3 Colonial Entanglements in Postwar Immigration and Citizenship Politics5.3.4 Postwar French Integration Politics and the Question of Demographic Preference5.3.5 Framing 1945-1950 as a Critical Juncture in French Migration Politics5.4 Germany - Establishing a Co-Ethnic Immigration Country, 1948-19535.4.1 Pre-History: German Historical Resistance to Diversification5.4.2 The \'Multiple Meanings\' of 19455.4.3 \'A new \"Us\"\'? Citizenship and Integration Politics in the Newly Established Germany5.4.4 Fra