Ana Tanasoca is a postdoctoral research fellow at the Centre for Deliberative Democracy and Global Governance, University of Canberra. Broadly interested in analytic normative political theory, her principal current research project explores the moral and epistemic dimensions of deliberation. Her work has been published in the European Journal of Sociology, Australasian Journal of Philosophy and Moral Philosophy and Politics.

• Acknowledgements; 1. Introduction; Part I. Acquisition: 2. Multiple citizenship by birthright; 3. Multiple citizenship by naturalization; 4. Multiple citizenship by investment; Part II. Consequences: 5. Multiple citizenship and collective decision-making; 6. Multiple citizenship and the boundary problem; 7. Taxing multiple citizens and global inequality; 8. Conclusions; References; Index.

'This is an original, well-informed, sharply written, stimulating normative appraisal of a growing phenomenon that certainly merits this attention. Its argument goes against the assumption that the trend toward multiple citizenship is fundamentally unproblematic. I am confident the book will impact the views of many scholars, whilst spurring others to productive, critical engagements.' Rogers Smith, Christopher H. Browne Distinguished Professor of Political Science and Associate Dean for Social Sciences, University of Pennsylvania

Ana Tanasoca is a postdoctoral research fellow at the Centre for Deliberative Democracy and Global Governance, University of Canberra. Broadly interested in analytic normative political theory, her principal current research project explores the moral and epistemic dimensions of deliberation. Her work has been published in the European Journal of Sociology, Australasian Journal of Philosophy and Moral Philosophy and Politics.

• Acknowledgements; 1. Introduction; Part I. Acquisition: 2. Multiple citizenship by birthright; 3. Multiple citizenship by naturalization; 4. Multiple citizenship by investment; Part II. Consequences: 5. Multiple citizenship and collective decision-making; 6. Multiple citizenship and the boundary problem; 7. Taxing multiple citizens and global inequality; 8. Conclusions; References; Index.

'This is an original, well-informed, sharply written, stimulating normative appraisal of a growing phenomenon that certainly merits this attention. Its argument goes against the assumption that the trend toward multiple citizenship is fundamentally unproblematic. I am confident the book will impact the views of many scholars, whilst spurring others to productive, critical engagements.' Rogers Smith, Christopher H. Browne Distinguished Professor of Political Science and Associate Dean for Social Sciences, University of Pennsylvania

Ana Tanasoca is a postdoctoral research fellow at the Centre for Deliberative Democracy and Global Governance, University of Canberra. Broadly interested in analytic normative political theory, her principal current research project explores the moral and epistemic dimensions of deliberation. Her work has been published in the European Journal of Sociology, Australasian Journal of Philosophy and Moral Philosophy and Politics.

• Acknowledgements; 1. Introduction; Part I. Acquisition: 2. Multiple citizenship by birthright; 3. Multiple citizenship by naturalization; 4. Multiple citizenship by investment; Part II. Consequences: 5. Multiple citizenship and collective decision-making; 6. Multiple citizenship and the boundary problem; 7. Taxing multiple citizens and global inequality; 8. Conclusions; References; Index.

'This is an original, well-informed, sharply written, stimulating normative appraisal of a growing phenomenon that certainly merits this attention. Its argument goes against the assumption that the trend toward multiple citizenship is fundamentally unproblematic. I am confident the book will impact the views of many scholars, whilst spurring others to productive, critical engagements.' Rogers Smith, Christopher H. Browne Distinguished Professor of Political Science and Associate Dean for Social Sciences, University of Pennsylvania