This article examines the impact of the criminalization of immigration on non-documented immigrants and the profession of social work. To meet its aims, the article explores the new realities for undocumented immigrants within the context of globalization. It then assesses the criminal justice and homeland security responses to undocumented immigrants, also referred to as the criminalization of immigration. It subsequently explores the ethical dilemmas and value discrepancies for social workers that are implicated in some of these responses. Finally, it presents implications for social workers and the social work profession.