Restrictions on immigration, as well as certain integration policies, are sometimes justified on the basis that too much, or a certain kind of, immigration risks erode social cohesion in democratic welfare states. Political philosophers who analyse the ethics of immigration have therefore become interested also in the empirical validity of these claims. This was the topic of a recent conference at the Centre for Advanced Migration Studies, University of Copenhagen. Two political philosophers who presented their work at the conference joins this episode to discuss social cohesion and immigration. Nils Holtug, Professor at the Department of Media, Cognition and Communication at the University of Copenhagen, runs a major research project on shared values on social cohesion and you can read some of his work on this topic here, here and here. Patti Tamara Lenard, Associate Professor Public and International Affairs at the University of Ottawa, has written extensively on trust, immigration and culture, especially in her book Trust, Democracy and Multicultural Challenges.