Although parent training (PT) interventions are considered the gold standard for preventing externalizing behaviors in children and youth, their dissemination in low-income Latina/o immigrant communities continues to be scarce throughout the United States (US). An alternative to address this gap in service delivery consists of implementing culturally adapted PT interventions characterized by cultural and contextual relevance. Thus, the main objective of this qualitative study was to document salient immigration-related experiences, as well as parenting needs and challenges, as reported by 30 low-income Mexican-origin immigrant caregivers residing in an urban setting in the Southern United States. The research methodology was guided by the tenets of the Thematic Analysis approach, which involved collecting data through a series of focus group interviews. Qualitative research findings highlight the importance of culturally and contextually tailoring adapted PT prevention interventions, prior to their delivery in contexts that differ from those in which interventions were originally adapted. Specifically, parents in the current investigation provided detailed accounts of immigration-related stressors that are highly relevant to inform recruitment procedures, intervention curriculum, and intervention delivery activities.