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Working Paper
Structural Change and Global Trade
Services, which are less traded than goods, rose from 50 percent of world expenditure in 1970 to 80 percent in 2015. Such structural change restrained "openness"?the ratio of world trade to world GDP?over this period. We quantify this with a general equilibrium trade model featuring non-homothetic preferences and input-output linkages. Openness would have been 70 percent in 2015, 23 percentage points higher than the data, if expenditure patterns were unchanged from 1970. Structural change is critical for estimating the dynamics of trade barriers and welfare gains from trade. Ongoing ...
Working Paper
Structural Change and Global Trade
Services, which are less traded than goods, rose from 58 percent of world expenditure in 1970 to 79 percent in 2015. Using a Ricardian trade model incorporating endogenous structural change, we quantify how this substantial shift in consumption has affected trade. Without structural change, we find that the world trade to GDP ratio would be 15 percentage points higher by 2015, about half the boost delivered from declining trade costs. In addition, this structural change has lowered the global welfare gains from trade integration by almost 40 percent over the past four decades. Absent further ...
Working Paper
Trade Liberalization versus Protectionism: Dynamic Welfare Asymmetries
We investigate whether the losses from an increase in trade costs (protectionism) are equal to the gains from a symmetric decrease in trade costs (liberalization). We incorporate dynamics through capital accumulation into a multicountry trade model and show that the welfare changes are asymmetric: Losses from protectionism are smaller than the gains from liberalization. In contrast, standard static trade models imply that the losses equal the gains. The intuition for asymmetry in our model is that, following protectionism, the economy can coast on its previously accumulated capital stock, so ...
Working Paper
Trade and Inequality in an Overlapping Generations Model with Capital Accumulation
We study the lifecycle aspect of within-country inequality that stems from capital and labor services supplied by individuals. Our environment is a combination of a multicountry trade model and an overlapping generations model with production and capital accumulation. Trade liberalization increases the measured total factor productivity in each country, which increases the marginal product of capital and incentivizes capital accumulation. Higher capital stock and higher measured productivity raise the marginal product of labor and, hence, wages. Inequality, measured by the ratio of old ...
U.S. tariff outcomes dependent on trading partner responses
U.S. tariff policy has historically shifted among competing goals: providing revenue, protecting domestic markets and opening foreign markets to domestic producers. These goals are unlikely to be achieved simultaneously. Modern models applied to the U.S. reveal that tariffs can enhance consumer welfare via terms-of-trade gains, a costly externality on foreign partners, but only if those partners don’t retaliate. Thus, potential consumption gains for U.S. households and businesses depend on policy choices and strategic responses from trading partners.
Working Paper
Demographics and the Evolution of Global Imbalances
The age distribution evolves asymmetrically across countries, influencing relative saving rates and labor supply. Emerging economies experienced faster increases in working age shares than advanced economies did. Using a dynamic, multicountry model I quantify the effect of demographic changes on trade imbalances across 28 countries since 1970. Counterfactually holding demographics constant reduces net exports in emerging economies and boosts them in advanced economies. On average, a one percentage point increase in a country?s working age share, relative to the world, increases its ratio of ...
Working Paper
Price equalization does not imply free trade
In this paper we show that price equalization alone is not sufficient to establish that there are no barriers to international trade. There are many barrier combinations that deliver price equalization, but each combination implies a different volume of trade. Therefore, in order to make statements about trade barriers it is necessary to know the trade flows. We demonstrate this first theoretically in a simple two-country model. We then extend the result quantitatively to a multicountry model with two sectors. We show that for the case of capital goods trade, barriers have to be large in ...
Working Paper
A Quantitative Analysis of Tariffs across U.S. States
We develop a quantitative framework to assess the cross-state implications of a U.S. trade policy change: a unilateral increase in the import tariff from 2 to 25 across all goods-producing sectors. Although the U.S. gains overall from the tariff increase, we find the impact differs starkly across locations. Changes in real consumption (welfare) range from as high as 3.8% in Wyoming to $-0.3% in Florida, depending mainly on how exposed states are to differentially-impacted sectors. As a result, the "preferred'' tariff rate varies greatly across states. Foreign retaliation in trade policy ...
Working Paper
Capital Accumulation and Dynamic Gains from Trade
We compute welfare gains from trade in a dynamic, multicountry model with capital accumulation. We examine transition paths for 93 countries following a permanent, uniform, unanticipated trade liberalization. Both the relative price of investment and the investment rate respond to changes in trade frictions. Relative to a static model, the dynamic welfare gains in a model with balanced trade are three times as large. The gains including transition are 60 percent of those computed by comparing only steady states. Trade imbalances have negligible effects on the cross-country distribution of ...
Working Paper
Capital Accumulation and Dynamic Gains from Trade
We compute welfare gains from trade in a dynamic, multi-country Ricardian model where international trade affects capital accumulation. We calibrate the model for 93 countries and examine transition paths between steady-states after a permanent, uniform trade liberalization across countries. Our model allows for both the relative price of investment and the investment rate to depend on the world distribution of trade barriers. Accounting for transitional dynamics, welfare gains are about 60 percent of those measured by comparing only the steady-states, and three times larger than those with ...