We propose a new sufficient statistic to measure the gains from trade in models where the extensive margin trade elasticity is not necessarily constant. This statistic is a function of one data moment, the market share of continuing domestic products, and one parameter, the elasticity of...

We measure the "new" gains from trade reaped by Canada as a result of the Canada-US Free Trade Agreement (CUSFTA). We think of the "new" gains from trade of a country as all welfare effects pertaining to changes in the set of firms serving that country as emphasized in the so-called "new" trade...

What tariffs would countries impose if they did not have to fear any retaliation? What would occur if there was a complete breakdown of trade policy cooperation? What would be the outcome if countries engaged in fully efficient trade negotiations? And what would happen to trade policy...

Modern trade agreements no longer emphasize basic trade liberalization but instead focus on international policy coordination in a much broader sense. In this paper we introduce the emerging literature on the political economy of such deep integration agreements. We organize our discussion...

International investment agreements employ dispute settlement procedures that differ markedly from their counterparts in trade agreements. We develop parallel models of trade and investment agreements and employ them to study these differences. We find that many of the observed differences can...

We examine how deep agreements on domestic regulations affect welfare in a world where such agreements are influenced by producer lobbies. The answer to this question depends in a critical way on whether the agreement focuses on product standards or on production regulations. International...

We use a quantitative economic geography model to explore subsidy competition among U.S. states. We ask what motivates state governments to subsidize firm relocations and quantify how strong their incentives are. We also characterize fully non-cooperative and cooperative subsidy choices and...