Christina Boswell is Professor of Politics at the University of Edinburgh. She is author of The Political Uses of Expert Knowledge: Immigration Policy and Social Research (Cambridge, 2009). Christina is currently leading a major Economic and Social Research Council (ESRC) project entitled 'Seeing Illegal Immigrants: State Monitoring and Political Rationality', which explores how public authorities in France, Germany and the UK have constructed and monitored irregular migrants since the 1960s.