Why the case for open borders is crucial to defending the rights of resident migrants

Joseph Carens’s important, engaging and superbly written book aims to offer “a general account of how democrats should think about immigration” (p10) based on “fundamental democratic principles” that Carens believes most people in Europe and North America already hold (p5). This methodological stance dictates the structure of the book. What is most controversial is pushed to the back. Chapters 11 and 12 make the argument Carens is most famous for: the case for open borders. Chapters 1-10 set that all aside to address a range of everyday migration controversies, from naturalisation to religious dress codes, under the assumption that states have a broad right to control immigration as they wish. The boast of the book is that it can adopt this underlying assumption and still defend a set of progressive policy proposals requiring states to extend a variety of rights to migrants. The case for open borders is meant to be Carens’s encore – a treat performance once the main show is over – not a premise upon which the whole thing hinges. Does Carens pull it off? In my view, no. Most of the arguments that Carens makes for migrants’ rights in Chapters 1-10 fail unless the right of states to control immigration is called into question. Conversely, if one accepts not only the common assumption that states have a right to control immigration but also the common beliefs that lie behind that assumption, then one has reason to resist the extension of rights to migrants.
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