We ask what level of migration would maximize world welfare. We find that skill-neutral policies are never optimal. An …

of the world economy calibrated to aggregate and firm-level data. Our framework features cross-country labor productivity … differences, international trade, remittances, and a heterogeneous workforce. We compare welfare under the observed levels of … flows - such as Jamaica or El Salvador - are also better off due to migration, but for a different reason: remittances. The …

, remittances, return migration, or an emigration 'lottery'. Instead, they are driven purely by the public nature of knowledge goods …

abundant Europe and the high-wage, labor scarce New World. Those global forces contributed to a reduction in unskilled labor … scarcity in the New World and to a rise in unskilled labor scarcity in Europe. Thus, it contributed to rising inequality in … in todayacirc;euro;TMs world? This paper argues that modern debates about inequality and schooling responses to …