We analyze the causal effect of the stock of foreigners residing in a country on the probability of a terrorist attack … in that country. Our instrument for the stock of foreigners relies on the interactions of two sets of variables … probability of a terrorist attack increases with a larger number of foreigners living in a country. However, this scale effect is …

character and stringency of immigration policies. Based on a selection of data for six pilot countries between 1990 and 2008, we … document the variation of immigration policies across countries and over time. We focus on three specific dimensions: the … immigration policies; and aggregation procedures that allow for gauging the stringency of immigration regulations comparatively …

We study immigration policy in a small receiving economy under self-selection of migrants. We show that a non …-discriminatory immigration policy choice affects and is affected by the migratory decisions of skilled and unskilled foreign workers. From this … interaction multiple equilibria may arise, which are driven by the natives' expectations on the welfare effects of immigration. In …

liberal access to citizenship improves the economic integration of immigrants. Our analysis relies on two major immigration … the reforms' eligibility rules. We find few returns of citizenship for men, but substantial returns for women. Returns are …

Recent European legislation on immigration has revealed a particular paradox on migration policies. On the one hand … controls the information related to the immigration stock it could delay the mass entry of immigrants, maintaining the required …

inefficient as it fails to internalize such externality. In addition, host countries quite often restrict immigration due to its … this paper we first discuss theoretically how tradable immigration quotas (TIQs) can reveal countries' comparative …