Many studies use tariffs to measure changes in trade policy. This paper shows that standard sources for tariffs suffer from substantial measurement error due to misreporting and the resulting false imputation: Countries fail to report tariffs every year and missing data are more prevalent for...

We consider a 3 country world in which each country's import market is served by competing exporters from its 2 trading partners. We assume that weak multilateral enforcement mechanisms prevent governments from implementing efficient trade policies through a multilateral agreement requiring...

This paper considers tariff phase-outs in multilateral and preferential agreements. The paper finds that early GATT rounds primarily were over bindings of existing rates and that it was not until the 1962-67 Kennedy Round's 50% reduction in manufactured goods tariffs that time paths of tariff...

We study the implications of customs union formation for multilateral tariff cooperation. We model cooperation in multilateral trade policy as self-enforcing, in that it involves balancing the current gains from deviating unilaterally from an agreed-upon trade policy against the future losses...

This paper presents two empirical tools to quantify the impacts of tariff changes on bilateral trade and welfare. Both tools are rooted in the structural gravity literature. The first tool estimates the impact of tariff changes on bilateral trade for 5,020 products in a partial equilibrium...