This book provides a critique of the way in which European citizenship is imagined and practiced. Setting their analysis in its full historical context, the authors challenge preconceived ideas about European citizenship on the basis of a detailed reconstruction of political, social and economic practice. In particular, they show the extent to which the elimination of formal internal borders within Europe has come hand in glove with the emergence of new socio-economic boundaries and the hardening of external borders. The book concludes with a number of concrete proposals to forge a genuinely post-national form of membership.