Contested Citizenship: Immigration and Cultural Diversity in Europe. By Ruud Koopmans, Paul Statham, Marco Giugni, and Florence Passy. Minneapolis: University of Minnesota Press, 2005. 376p. $75.00 cloth, $25.00 paper.

This is a well-written, rigorous, empirical contribution to scholarship on immigration and ethnic relations in post–World War II Europe. The study adds particular value through its grounded evaluation of basic assumptions concerning multiculturalism. Ruud Koopmans and colleagues coded political claims of migrant, extreme-right, and pro-migrant/anti-racist actors in France, Germany, the Netherlands, Switzerland, and the United Kingdom, as reported in a prominent newspaper in each country. These data inform the authors' assessment of whether migrant group makeup, national conceptions of citizenship, or supranational institutions drive the various actors' political behavior. The authors conclude that different national citizenship models best explain variations in political claims making. Postwar migration to Western Europe generates intense political conflict, according to the authors, because it raises questions about basic aspects of national sovereignty, including border control, citizenship attribution, and the principles of nationhood.