This article explores the conceptual significance of changing mobilities to theories of crime and punishment through a critique of the work of scholars from the Chicago school of sociology. The argument presented demonstrates that the concepts of social disorganization, differential association and culture conflict are part of the colonial and national histories of the United States of America. The argument is advanced that these classic concepts are implicated in the processes by which this nation demarcated its nationals from foreigners'. Furthermore, the increasing pace, scope, and complexity of a range of globalizing processes questions the continuing validity of the Chicagoan paradigm. Simply put, modern distinctions between 'us'and 'them', as well as 'here' and 'there', are undergoing substantial transformation. Reconfigurations of such profound significance call for a critical engagement with the scholarly literature on contemporary mobilities, identities and forms of belonging. As persons from elsewhere, foreigners are people who figure as 'in' the social body, but also in some sense not 'of it. For centuries, the notion has carried connotations of strangerhood, and been used to identify certain people as different from oneself in some significant way. In earlier usage, a foreigner could be somebody from another county or parish, who was thereby an outsider to one's immediate locality. Today's 'foreigners' are more likely to be those who hail from another nation. They may have been born beyond the frontiers of the national territory. Alternatively, they may be native-born, yet are barred from full national belonging because their parents are foreign nationals, or they have linguistic or corporeal features which many natives see as typically alien. Either way, 'foreigners' call up an elaborate imagination of what lies beyond the national boundaries. This article explores the conceptual significance of changing mobilities through a critical reading of work by members of the Chicago school of sociology published during the 1920s and 1930s.1 The concepts of social disorganization, differential association and culture conflict originated in their work, and were grounded within a particular set of ideas about mobilities, identities and forms of belonging. These concepts have been identified as orientalist, in the sense that they depict the 'other' as inferior, dangerous, criminal and amoral (Agozino 2000).2 They are also part of the colonial and national histories of the United States. It will be my contention that the apparently benign concepts of social disorganization, differential association, and cultural conflict are implicated in the processes by which this nation demarcated its nationals from