A new era of international migration has been accompanied by increasingly restrictive immigration controls to manage migration to more developed countries. The consequence has been fewer routes to enter and/or stay in countries in a regularised way and as a result, an increase in the numbers of undocumented migrants. In this situation undocumented migrants, especially in relation to immigration controls and internal security have come to occupy an important role on the policy agenda of many nation states. The control and regulation of undocumented migrants has become an increasingly...