The growth of the field of immigration in multiple directions and across disciplines and areas presents an opportune juncture to pause and reflect on the central role sociology has played in the study of immigrants and immigration, as well as to assess the contributions that immigration research has made to sociology. This essay discusses three subfields in sociology in which the sociological study of immigrants has contributed to bring new light to long-standing questions: family, religion, and ethnic and racial studies. At the same time, it brings up areas – culture and arts, social movements and civic engagement, and citizenship, belonging and the state – in which immigration scholars in sociology could establish a more vibrant intellectual dialog with those subfields. Far from exhausting the discussion, these comments are intended to offer potential avenues for further research and discussion.