Rights differentiation within the bounds of egalitarian justice

Can awarding migrants fewer legal rights than citizens ever be just? This paper explores this issue. I first outline an abstract argument in favor of rights differentiation. According to this argument, people's rights ought to track their independent claims; since these claims may vary, some rights differentiation is permissible. I then suggest that this argument threatens to undermine the institution of citizenship because citizens' claims on the state can differ in just the way migrants' claims can, and the rights of citizenship can be unbundled and awarded piecemeal. To resolve this tension, I offer a novel account of the normative functions of citizenship, which turns on the assertion that citizenship's public conferral of equal rights promotes status equality and confers equal recognition. This account sets firm bounds on rights differentiation without ruling it out entirely.