"McCook offers an insightful comparative study that carefully situates in time Polish immigrant communities in the Ruhr valley and in Pennsylvania and demonstrates well their social and political evolution. He makes a strong case for the modern relevance of the Polish experience in discussion of immigration and government policy today." (The Journal of American History) "The Borders of Integration offers a welcome new approach to migration and labor history. The analysis rests on comparison and leads up to concrete suggestions for contemporary policies of integration, based on the divergent rates of return migration in post-World War I Westphalia and Pennsylvania." (Nations and Nationalism) "McCook renders his complex material with a graceful clarity that makes this work a pleasure to read. Summing Up: Highly recommended. All levels/libraries." (Choice) "McCook has produced a formidable piece of comparative history…. Present debates about immigration are often uninformed by historical examples and lacking in explanations regarding the mechanism by which integration works. As such, McCook's Borders of Integration should be welcomed by those scholars who wish to engage seriously and soberly in the hot-button debates of assimilation and multiculturalism in present-day America and Germany." (German Studies Review) "McCook has updated existing ethnic studies by demonstrating that comparative studies of the factors shaping the complex integration process help us to better understand the immigrant experience. Scholars should follow his call for using this approach to evaluate recent and current migration trends." (Yearbook of German-American Studies) "This study offers an important lesson that the path towards successful integration includes immigrants' economic, political and cultural participation in the public sphere. Only through a shared cultural community in which both the immigrants become familiar to the host society, and the native populations undergo changes prompted by immigration, are the barriers to integration removed." (Urban History) "This study is a model of comparative social history." "This is a historical analysis of migration patterns in the late nineteenth and early twentieth centuries that provides highly illuminating perspectives on a range of difficult and important questions to do with the integration of migrants and the importance of migration for questions of national identity. The author is to be congratulated on writing in elegant and clear prose, which will be attractive to scholars and students alike."