We study the reasons for the large, coincident increases in unbalanced international trade and overall trade from 1970 to 2019. We show that these two salient features--a rise in net and gross international trade--are largely a consequence of a reduction in intratemporal trade barriers rather...

We study the optimal monetary policy response to the imposition of tariffs in a model with imported intermediate inputs. In a simple open-economy framework, we show that a tariff maps exactly into a cost-push shock in the standard closed-economy New Keynesian model, shifting the Phillips curve...

We evaluate the aggregate effects of a change in tariffs on the US and world economies when tariff revenue is used to enact fiscal reform. Our model combines a standard international model of fiscal policy with taxes and a dynamic model of trade participation and tariffs that allows for...

What is the optimal macroeconomic tariff when trade is imbalanced and the policy objectives go beyond social welfare and also include fiscal revenues, increasing the number of manufacturing jobs, and closing a trade deficit? We study these questions in an environment which allows for long-run...

After decades of rising global economic integration, the world economy is now fragmenting. To measure this phenomenon, we introduce an index of geopolitical fragmentation derived from various empirical indicators. This index is developed using a flexible dynamic factor model with time-varying...

This paper is a case study of the exchange rate adjustments during the first week following the swapping US election results. We compute three measures of exchange rate depreciation: the maximum depreciation during the 1st trading day after November 6 UTC 0:00 to capture the reaction on the...

What are the long-run effects of permanent changes to the economy? We characterize long-run comparative statics for a broad class of models in terms of expenditure shares, substitution elasticities, and capital supply elasticities. Our key insight is that long-run analysis can be performed using...

We leverage newly linked data from the U.S. Census Bureau and the U.S. Bureau of Economic Analysis to study transactions within U.S. multinational enterprises (MNEs). We show that using administrative data on intrafirm trade allows us to correct for measurement error in survey data and to...

Foreign investors' changing appetite for risk-taking have been shown to be a key determinant of the global financial cycle. Such fluctuations in risk sentiment also correlate with the dynamics of UIP premia, capital flows, and exchange rates. To understand how these risk sentiment changes...

We introduce information frictions into a tractable quantitative multi-country multi-sector model with global value chains. Producers in a sector do not perfectly observe contemporaneous shocks to other countries and sectors, and their output decisions respond to their idiosyncratic beliefs...