In this paper we propose a theoretical model of international trade that shows the welfare gains from trade are much higher than what Arkolakis et al 2014 find. We use the idea of weak linkages and the complementarity between the intermediate goods as in Jones 2011. The idea is simple....

We show in a multi-sector, heterogeneous-firm trade model that the effect of tariffs on entry, especially in the presence of production linkages, can reverse the traditional positive optimal tariff argument. We then use a new tariff dataset, and apply it to a 189-country, 15-sector version of...

In a standard multi-sector, heterogeneous-firm trade model the effect of tariffs on entry, especially in the presence of production linkages, can reverse the traditional positive optimal-tariff argument. We construct and employ a new, large, disaggregated tariff dataset and then apply a...

This paper shows that manufacturing exporters export goods that they have not produced and thus also act as trade intermediaries. This exporting of “sourced” products is ubiquitous across firms, products, and destinations. Using the geographic dimension of the data, we uncover that almost...