I’ve touched on one of these papers before, but NBER Digest has a nice rundown of recent work on Trump’s trade war. One study finds
that the costs of the new tariff structure were largely passed through as increases in U.S. prices, affecting domestic consumers and producers who buy imported goods rather than foreign exporters. The researchers estimate that the tariffs reduced real incomes by about $1.4 billion per month. Due to reduced foreign competition, domestic producer prices also increased. The prices of manufactured goods rose by one percentage point relative to a no-trade-war scenario. The reduction in real incomes represents the welfare cost of higher consumer prices, less the government revenue collected by the tariffs and the additional income of domestic producers who were able to sell their products at higher prices.
This could end up being “especially costly for multinational companies that have made substantial sunk-cost investments in supply chains in other countries, for example by relying on facilities in China or other impacted countries. The study estimates that around $165 billion worth of trade has been rerouted to avoid them.”
estimate[s] that the new tariff regime reduced U.S. imports by 32 percent, and that retaliatory tariffs from other countries resulted in an 11 percent decline of U.S. exports. They use these responses to estimate import demand and export supply elasticities, and then apply these estimates to calibrate a general equilibrium model of the U.S. economy with detailed input-output linkages. They estimate that higher prices facing U.S. consumers and firms who purchased imported goods generated a welfare loss of $68.8 billion, which was substantially offset by the income gains to U.S. producers who were able to charge higher prices ($61 billion). The researchers estimate the resulting real income decline at about $7.8 billion per year, a value broadly comparable to the net income decline estimated in the previous study.
What’s more, “The average real wage of workers in tradeable sectors declined by 0.7 percentage points, with a standard deviation of 0.4 percentage points across counties, with workers in the Midwest suffering more than those in other regions.” The protectionist policies also appear to be (of course) political. It turns out that “the U.S. tariffs protected industries that tended to employ workers in the most politically competitive counties. Foreign governments imposed retaliatory tariffs in sectors based in more Republican-leaning counties. The researchers estimate that counties with at least an 85 percent Republican vote share bore losses over 50 percent greater than counties in which the Republican vote share was less than 15 percent.”