Migration of the unskilled clearly benefits the origin country, mainly due to the flow of remittances but also if the departure of some raises the ability of others to migrate. This depends on whether trade is a complement or a substitute for migration. The impact of such flows on the...

This contribution investigates the opportunities of migration for developing countries. The benefits of migration for sending countries are often undervalued. But migrants may foster trade, remittances, innovations, investments back home, and even return home at some time with better human...

This paper investigates through which channels foreign aid impacts migration to donor countries. To disentangle the non-donor-specific channels (development and credit constraint channels) from the donor-specific channels (information and instrumentation channels), we use the fact that...

We investigate the effect of population aging on international factor flows in a political-economy framework. Political barriers to immigration in developed countries and insecure property rights in developing countries impede factor flows. Taking into account different generations' conflicting...

In response to the recent migrant and refugee crisis, rich countries have redoubled policy efforts to deter future immigration from poor countries by addressing the "root causes" of migration. We review existing evidence on the effectiveness of such efforts. First, aid disbursements do not...

Immigration officials in rich countries are being asked to become overseas development officials, charged with preventing skilled workers from leaving poor countries, where their skills are needed. Some advocates urge restrictions or taxes on the emigration of doctors and engineers from...

Migration decisions affect those left-behind in ways that are partly taken into account by market forces (e.g., wage effects on labour markets) and for the most part these can be seen as pure externalities. Diasporas are an example of such an externality. This paper reviews the recent economic...