What does it mean to provide justice for undocumented workers who have been living among us without proper legal documentation? How can we do justice to the undocumented migrants who have been doing the low-skilled, low-paid jobs unwanted by citizens? Why should we even try to do justice for people who violate the laws of the society? Religious Ethics and Migration: Doing Justice to Undocumented Workers addresses these questions from a distinctive religious ethical perspective: the Christian theology of forgiveness and radical hospitality. In answering these questions, the author employs in-depth interdisciplinary dialogues with other relevant disciplines such as immigration history, global economics, political science, legal philosophy, and social theory. He argues that the political appropriation of a Christian theology of forgiveness and the radical hospitality modeled after it are the most practical and justifiable solutions to the current immigration crisis in North America. Critical and interdisciplinary in its approach, this book offers a unique, comprehensive, and balanced perspective regarding the urgent immigration crisis.