Social movement scholars acknowledge the importance of morality in joining and shaping social movements. There is less knowledge about the content of morality that keeps social movement participants committed, once in. Moral commitments, I argue, emerge from the work conducted within social movements. By looking at everyday activities in the immigrant rights movement in El Paso, Texas, I analyze how commitment is shaped through the caregiving practices of staff and volunteers within two organizations serving immigrants and asylum seekers on the border: Compromiso and Casa Asuncion. Despite the strenuous work involved, I find care givers in these two organizations make sense of their continued participation by drawing on what I call familial moralities. At Compromiso, a legal aid office, caregivers reflect on their or others’ immigrant family histories, creating an intellectual attachment to the work through family. At Casa Asuncion, a migrant shelter, caregivers draw on new familial roles with migrants and the shelter staff, creating an emotional attachment as family.