Introduction. Nigerian immigrants constitute a major proportion of the increasing immigration trend from sub-Saharan Africa to the United States. However, limited studies exist on the psychosocial impacts of their immigration experiences. This phenomenological study, based on Husserlian philosophy, explored the perceptions of Nigerian immigrants about the psychosocial impacts of immigration to the United States. Method. Twenty Nigerian immigrants in Houston, Texas, constituting a purposive sample were interviewed face-to-face using semistructured guided questions and probes. Results. A thematic analysis using Giorgi's approach revealed both positive and negative themes but mostly negative psychosocial experiences of migration to the United States. Discussion. The participants associated the most negative experiences with the lack of adequate preparation prior to migration and the cultural differences between the two countries. Notwithstanding that the findings of this study have health and immigration policy implications and increased awareness for potential immigrants, further studies are needed.