We examine how cultural norms shape attitudes toward immigration. Our causal identification relies on comparing students who moved across the East-West border after German reunification with students who moved within former East Germany. Students who moved from East to West became more positive...

Using provisions to ease the movement of business visitors in trade agreements, we show that removing barriers to the movement of business people promotes trade. We document the increasing complexity of Free Trade Agreements and develop an algorithm that combines machine learning and text...

What is the causal effect of conflict on refugees' return and integration? To answer this question, we launched a panel survey of Ukrainian refugees across Europe in June 2022 and combined it with geocoded conflict data. Most refugees plan to return, and initial return intentions strongly...