With the success of the World Trade Organization and its predecessor, the General Agreement on Tariffs and Trade, in reducing conventional tariff barriers, much of the recent focus of regional and multilateral trade agreements has switched to non-tariff measures, both border and...

There is substantial evidence that with the progressive global decline in tariffs over several decades, trade costs are a more significant barrier to trade than tariffs, especially in Sub-Saharan Africa. This paper decomposes trade costs into three categories: costs that can be lowered by trade...

This paper re-examines the development implications of international migration focusing on two issues: how the costs and benefits of migration change over time, and the significance of South-South migration for development. First, the analysis finds that although greater migration could push...