This article examines the psychological dynamics of undocumented immigrants during the COVID-19 pandemic, focusing on the relationship between stress, coping strategies, and locus of control. As a highly vulnerable and often marginalized group, undocumented immigrants faced compounded hardships during the pandemic, including uncertainty, instability, and strict public health measures. The study aims to understand how this population adapted to the pandemic and how their beliefs about control influenced the ways they managed stress.