A growing literature suggests that high-income countries export high-quality goods. Two hypotheses may explain such specialization, with different implications for welfare, inequality, and trade policy. Fajgelbaum, Grossman, and Helpman (2011) formalize the Linder hypothesis that home demand...

In the United States, many industries have a Silicon Valley-type geographic localization. In Europe, these same industries often have four or more major centers of production. This difference is presumably the result of the formal and informal trade barriers that have divided the European...

We study how trade-policy dynamics affect the dynamics of trade volumes and the implications of these effects for estimates of the trade elasticity. We use data on US imports and trade policy from 1974-2017 for China and Vietnam--the countries with the largest import growth and the largest...

We review theoretical and empirical work on the economic effects of the United States and China trade relations during the last decades. We first discuss the origins of the China shock, its measurement, and present methods used to study its economic effects on different outcomes. We then focus...

Distribution of goods often involves multiple intermediaries engaged in sequential buying and reselling. Why do these chains of intermediation exist, and what are their implications for consumers? We show that multi-intermediary chains arise in response to internal economies of scale in trade...