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We combine detailed information on US temporary trade barriers during 1989-2020 with input-output data to study the effects of trade protection along supply chains. We focus on measures imposed against China, which has been the main target of trade protection during the last decades. To deal with endogeneity concerns, we use an instrumental variable strategy, exploiting changes in the identity of swing states across presidential terms and heterogeneous exposure to these political shocks across industries. We find that politically motivated trade protection generates winners and losers: it fosters employment growth in protected industries, but hampers employment growth in downstream industries.
