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...

Typically, economics assumes that property rights over productive resources or goods are perfectly defined and costlessly enforced. The costs of insecurity and the resultant conflict are, however, real and often economically significant. In this paper, we examine how international trade regimes...

Chapter 1: Introduction -- Chapter 2: An Agricultural Household Model with Tariffs -- Chapter 3: Data and Estimation -- Chapter 4: Income Gains and Inequality Costs -- Chapter 5: The Trade-Off -- Chapter 6: Alternative Models -- Chapter 7: HIT: Household Impacts of Trade -- Chapter 8:...

We build a model of tacit collusion between firms that operate in multiple markets to study the effects of trade costs. A key feature of the model is that cartel discipline is endogenous. Thus, markets that appear segmented are strategically linked via the incentive compatibility constraint....