This essay compares and contrasts the disciplines of sociology and law and society. I then outline how sociology can enrich law and society with stronger theory-building and better linkages of theoretical frameworks to empirical data. I next consider how law and society can enrich sociology, including by encouraging sociologists to take seriously law’s constitutive nature and to engage more directly with their work’s normative implications. Throughout, I draw primarily on research on U.S. immigration enforcement, which is both my area of study and a site of rich cross-pollination between the two fields.