Citizenship is no longer an exclusive relationship. Many people today are citizens of multiple countries, whether by birth, naturalization, or even through monetary means, with schemes fast-tracking citizenship applications from foreigners making large investments in the state. Moral problems surround each of those ways of acquiring a second citizenship, while retaining one's original citizenship. Multiple citizenship can also have morally problematic consequences for the coherence of collective decisions, for the constitution of the demos, and for global inequality. The phenomenon of multiple citizenship and its ramifications remains understudied, despite its magnitude and political importance. In this innovative book, Ana Tanasoca explores these issues and shows how they could be avoided by unbundling the rights that currently come with citizenship and allocating them separately. It will appeal to scholars and students of normative political theory, citizenship, global justice, and migration in political science, law, and sociology.

‘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

‘This is impressive scholarship, well-argued and clearly written, with a light and occasionally witty touch that makes it a very good, even pleasurable read.'

Christian Joppke - Executive Director, Institute of Sociology, University of Bern