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...

As awareness of the process of globalization grows and the study of its effects becomes increasingly important to governments and businesses (as well as to a sizable opposition), the need for historical understanding also increases. Despite the importance of the topic, few attempts have been...

According to the Washington Consensus, developing countries’ growth would benefit from reductions in barriers to trade. However, the empirical basis for judging trade reforms is weak. Econometrics are mostly ad hoc; results are typically not judged against models; policies are poorly measured;...