His research focuses on racial, ethnic, religious, and immigrant-origin minorities, with a regional emphasis on Western Europe. In addition to publishing articles in journals such as World Politics, Comparative Political Studies, Social Forces, Political Behavior, European Political Science, West European Politics, the European Sociological Review, the Journal of Ethnic and Migration Studies, Ethnic and Racial Studies, and the Du Bois Review, he has also published two books. His first book, Immigrant Politics: Race and Representation in Western Europe, was published with Lynne Rienner. His second book, Ethnic Minority Migrants in Britain and France: Integration Trade-Offs, was published with Cambridge University Press. More information can be found at his website and on his Google Scholar profile.