This book is the first in-depth analysis on criminal offences in Britain, and presents original empirical material about the use of criminal powers against suspected immigration wrongdoers. Based on interviews with practitioners and staff at the UK Border Agency and data from court cases involving immigration defendants, it examines prosecution decision making and the proceedings before the criminal justice system. Crimes of Mobility critically analyses the criminalization of immigration status and, more generally, the functions of the criminal law in immigration enforcement, from a legal and normative perspective."--pub. desc.