His research interests include social stratification; migration and immigrant incorporation; race and ethnicity; and health. Asad’s current research agenda examines how immigration law and enforcement contribute to multiple forms of social inequality. His in-progress book manuscript, under contract with Princeton University Press, considers the specific risks noncitizens in the United States associate with holding a “legal” relative to an “illegal” status. Another project relies on large-scale survey data to study how ethno-racial inequality within Mexico shapes individuals' opportunities for lawful migration to the United States.