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...

The outcome of trade policies to increase access for foreign firms to the home country's market is shown to be sensitive to the implementation procedure used. The importance of the timing of moves between government and firms is highlighted by focusing on taxes and subsidies to implement minimum...

Melitz (2003) demonstrates that greater trade openness raises industry productivity via a selection effect and via a production re-allocation effect. Our comment points out that the set-up assumed in the Melitz model displays a trade off between static and dynamic efficiency gains. That is,...

This paper builds a dynamic industry model with heterogeneous firms that explains why international trade induces reallocations of resources among firms in an industry. The paper shows how the exposure to trade will induce only the more productive firms to enter the export market (while some...

We develop a model of equilibrium entry, trade, and price formation in over-the- counter (OTC) markets. Banks trade derivatives to share an aggregate risk subject to two trading frictions: they must pay a fixed entry cost, and they must limit the size of the positions taken by their traders...

Several of the recently negotiated regional trade agreements (Canada-U.S., NAFTA, E.C.-Hungary/Poland/Czeck and Slovak Republics) contain significantly fewer concessions by the large countries to smaller countries than vice versa. Yet, it is small countries that have sought them and see...