Classical Athens assimilated and disenfranchised a large, free immigrant population of “metics” on the basis of blood, generation after generation. Yet immigration politics remain a curiously displaced context for interpreting ancient Greek political thought and its instructive criticisms of democratic citizenship. Accordingly, Euripides’s Ion—the only classical text devoted to exploring the founding myth Athens used to naturalize metics’ exclusion from citizenship–is underexamined by political theorists. Attending to the play’s metic figurations and historical-poetic contexts, this essay argues that the Ion is (...) a hitherto unappreciated immigration fable about the paradoxes of blood-based citizenship. Drawing ultimately on the work of Eve Kosofsky Sedgwick, it shows that the tragedy is a still-relevant political critique of the practices of concealment and disclosure—so dominant in today’s U.S. immigration rights debate—that make political status look prior to and generative of citizenship practice. (shrink)