Is the variation in bilateral trade flows across countries primarily due to differences in the number of exporting firms (the extensive margin) or in the average size of an exporter (the intensive margin)? And how does this affect the estimation and quantitative implications of the Melitz (2003)...

This paper argues that openness to migration is heavily dependent upon (1) ideational and institutional factors, especially the willingness of states to guarantee a minimum basket of rights for migrants; (2) domestic political coalitions and alignments that are driven in part by factor...