Not All Trade Restrictions are Created Equally

There has been great focus in the recent trade theory literature on the introduction of firm heterogeneity into trade models. This introduction has highlighted the importance of the entry/exit decision of firms in response to changes in trade barriers. However, it is typical in many of these models to use iceberg transport costs as a general form of trade barriers that can be interchangeable with ad valorem tariffs. I show that this is not always an appropriate conclusion. Specifically, I illustrate that profit for an exporter is more elastic in response to tariffs than iceberg transport costs, which has implications for total product variety. One such implication is the possibility for there to be an anti-variety effect associated with lower transport costs while there also being a pro-variety effect associated with lower tariffs.Intra-industry Trade; Trade policy; Firm heterogeneity; Monopolistic competition

The Choice of Modeling Firm Heterogeneity and Trade Restrictions

There has been great focus in the recent trade theory literature on the introduction of firm heterogeneity into trade models. However, these models tend to rely heavily on symmetry assumptions and assume melting iceberg transport costs as the only form of trade restrictions. Moreover, a standard assumption is that firms differ across marginal cost, yet empirical evidence suggests this is not the only important source of heterogeneity. I provide a highly tractable model, in which firms differ across fixed costs, that qualitatively maintains the main results of these models, but allows for asymmetric changes in trade restrictions, a necessary step towards studying strategic trade policy. In addition, I highlight the differences in the effects on product variety associated with changes in an ad valorem tariff, iceberg transport costs, and additional beachhead costs to become an exporter. This is important as there are potential offsetting effects on firm entry.Intra-industry Trade; Trade policy; Firm heterogeneity; Monopolistic competition

Optimal Tariffs with FDI: The Evidence

Recent theoretical work suggests that the presence of foreign direct investment (FDI) lowers a country’s noncooperative Nash tariff. To test this hypothesis, we first adapt the theoretical model formulated by Blanchard (2010) to derive an intuitive, empirically testable equation. This equation is an augmentation of the standard formula equal to the inverse of export supply elasticity. Using constructed estimates of export supply elasticities and measures of FDI, we test this hypothesis with respect to tariffs set by China prior to 2001. We focus on China before its accession into the World Trade Organization (WTO) for two primary reasons: first, China is a recipient of FDI during this time; and second, prior to becoming a WTO member China can be seen as a player in a noncooperative game. We find evidence to suggest that before entering the WTO, China chooses lower tariffs, ceteris paribus, for industries that receive more FDI. This is an important result since having a better understanding of how countries act unilaterally will provide insight into the multilateral cooperative outcome; that is trade negotiations.Foreign direct investment; Optimal tariffs

Royale with Cheese: The Effect of Globalization on the Variety of Goods

The key result of the so-called “New Trade Theory” is that countries gain from falling trade costs by an increase in the number of varieties available to consumers. Though the number of varieties in a given country rises, it is also true that global variety decreases from increased competition wherein imported varieties drive out some local varieties. This second result is a major issue for anti-trade activists who criticize the move towards free trade as promoting homogenization” or “Americanization” of varieties across countries. We present a model of endogenous entry with heterogeneous firms which models this concern in two ways: a portion of a consumer’s income is spent overseas (i.e. tourism) and an existence value (a common tool in environmental economics where simply knowing that a species exists provides utility). Since lowering trade costs induces additional varieties to export and drives out some non-exported varieties, these modifications result in welfare losses not accounted for in the existing literature. Nevertheless, it is only through the existence value that welfare can fall as a result of declining trade barriers. Thus, for these criticisms of globalization to dominate, it must be that this loss in the existence value outweighs the direct benefits from consumption.firm heterogeneity; tourism

Optimal Tariffs, Tariff Jumping, and Heterogeneous Firms

The majority of research to date investigating strategic tariffs in the presence of multinationals finds a knife-edge result where, in equilibrium, all foreign firms are either multinationals or exporters. Utilizing a model of heterogeneous firms, we find equilibria in which both pure exporters and multinationals coexist. We utilize this model to study the case of endogenously chosen tariffs. As is standard, Nash equilibrium tariffs are higher than the socially optimal tariffs. Unlike existing models with homogeneous firms, we find that non-cooperative tariffs promote the existence of low-productivity firms relative to the socially optimal tariffs. This highlights a new source of inefficiency from tariff competition not found in models of homogeneous firms. In addition, we find that in many cases the Nash equilibrium tariff when FDI is a potential firm structure is lower than when it is not. As a result, FDI improves welfare by mitigating tariff competition.Intra-industry Trade; Trade policy; Firm heterogeneity; Monopolistic competition

Distorted Trade Barriers: A Comment on “Distorted Gravity”

Since firm heterogeneity has been introduced into international trade models, the importance of firm entry and exit (the extensive margin) has been highlighted. Thomas Chaney (2008) illustrates how accounting for heterogenous firms (and this extensive margin) alters the standard gravity equation. In particular, it reverses the previously predicted effect the elasticity of substitution has on the elasticity of trade flows. Further, Chaney shows that the elasticity of trade flows with respect to variable trade costs is a constant. As is common, iceberg transport costs are used as the variable trade barrier. However, in many empirical studies, ad valorem tariffs are also used as a form of trade barrier, which as Cole (2010) points out, is not isomorphic to iceberg transport cost in a monopolistically competitive setting. In this comment, I solve the Chaney (2008) model using ad valorem tariffs instead of iceberg transport costs and show the elasticity of trade flows with respect to tariffs is not constant, but depends on the elasticity of substitution.Intra-industry Trade; Gravity; Firm heterogeneity; Monopolistic competition

The Determinants of Trade Agreements in Services vs. Goods

Since Baier and Bergstrand (2004) there has been a focus on empirically testing the economic determinants of signing a free trade agreement (FTA). However, FTAs do not imply an agreement on services; a separate economic integration (EIA) is needed. As trade in services is one of the fastest growing sectors of the global economy, it is important to pay special attention to these agreements. We use the methodology of Baier and Bergstrand (2004) to investigate di¤erences in the determinants of signing an agreement on goods trade and services trade. In addition to the standard economic variables, we include variables for skilled/unskilled labor, and political stability. We nd in general, qualitative similarities (though di¤erent magnitudes) and some robust speci c di¤erences. JEL classi\u85cation: F14, F15