Both the interests of nation states to manage migration and the behavior of migrants during their individual journeys have mutually reinforcing effects on the design and functioning of contemporary migration regimes. This assumption has motivated the interdisciplinary approach of this volume. The aim is to understand how immigration policies affect migrants’ journeys and vice versa. We want to find out whether or not the assumptions that lead to the design of immigration policies reflect reality. Does border control prevent irregular immigration? And what is the role of the various actors, including the countries of origin, transit, and arrival, and the migrants themselves? In order to answer these questions, we bring together insights from political science and ethnographic field work—two disciplines which have so far debated their insights mainly within separate research frameworks. The articles take into account the interests of the migrants’ countries of origin, transit and arrival, as well as the motives and strategies of the migrants themselves. The resulting findings are relevant to both policy makers and scientific experts, but also to anyone interested in governing migration.

Both the interests of nation states to manage migration and the behavior of migrants during their individual journeys have mutually reinforcing effects on the design and functioning of contemporary migration regimes. This assumption has motivated the interdisciplinary approach of this volume. The aim is to understand how immigration policies affect migrants’ journeys and vice versa. We want to find out whether or not the assumptions that lead to the design of immigration policies reflect reality. Does border control prevent irregular immigration? And what is the role of the various actors, including the countries of origin, transit, and arrival, and the migrants themselves? In order to answer these questions, we bring together insights from political science and ethnographic field work—two disciplines which have so far debated their insights mainly within separate research frameworks. The articles take into account the interests of the migrants’ countries of origin, transit and arrival, as well as the motives and strategies of the migrants themselves. The resulting findings are relevant to both policy makers and scientific experts, but also to anyone interested in governing migration.