Michael Bommes (1954–2010) was one the most brilliant and original scholars of migration studies in the twentieth and twenty-first centuries. This posthumously published collection brings together a selection of his most important essays on immigration, transnationalism, irregular migration, and migrant networks. In Bommes, the academy lost a scholar with penetrating analyses of migration, the welfare state and social systems where the two interact. By completing his last project, Boswell and D'Amato have done scholarship a lasting service. A major contribution to public debate and a tribute to a very great man. Randall Hansen, University of Toronto