Matthew R. Joseph

In this paper I propose a novel defence of political cosmopolitanism grounded in a familiar principle: universal moral equality. Critics of cosmopolitanism generally agree to universal moral equality, but disagree about what moral equality means politically. According to my argument, if we accept that all people are morally equal, then we ought to accept their equal moral standing. We should therefore prefer socio-political arrangements that reflect the equal moral standing of all people over those that reflect differentiated moral standing. A reasonable cosmopolitanism need not preclude partialist attachment to co-nationals, or undermine the significance of self-determination, so long as political arrangements do not produce differentiated moral standing. As the political application of an uncontroversial moral principle, I defend reasonable cosmopolitanism against nationalism and statism. Neither of these, I argue, are suitable foundations for global justice in migration because they each conceive of justice as a local concern for insiders.

Most philosophical defences of the state’s right to exclude immigrants derive their strength from the normative importance of self-determination. If nation-states are taken to be the political institutions of a people, then the state’s right to exclude is the people’s right to exclude – and a denial of this right constitutes an abridgement of self-determination. In this paper, I argue that this view of self-determination does not cohere with a group-agency view of nation-states. On the group-agency view that I defend, a nation-state is the kind of group-agent that does not supervene on the intentionality of member/citizens. If we think that a nation-state is an intentional group-agent in its own right, then we should think that self-determination resides with the institutions of the state rather than with the citizens. If nation-states do not supervene on the intentionality of citizens, then it is unclear why citizens might have the right to control membership in the state as a feature of self-determination.