The volume contains papers presented at the fourth Workshop -American Ethnicity: Rethinking Old Issues, Asking New Questions- which took place in Krakow, Poland, on May 24th-25th, 2010. The event was organized by the Institute of American Studies and Polish Diaspora of the Jagiellonian University, and supported by the (American) Immigration and Ethnic History Society. The tradition of organizing bi-annual workshops goes back to 2004 and continues to be a forum for discussing ongoing research and sharing ideas. The texts included in this volume provide a comparative context to immigration...