We study unanticipated tariffs on imports of intermediate goods in a setting with firm-to-firm supply relationships … free trade. Once they are in place, the home government surprises with an input tariff. This can lead to renegotiation with … deterioration in the terms of trade. The welfare implications of a tariff are ambiguous in this second-best setting, but plausible …

Supply chain disruptions, which have become commonplace, are often associated with globalization and trade. Little is … CES case, a subsidy for diversification achieves the constrained social optimum and dominates a policy that promotes … at home versus abroad may achieve greater welfare than ones that encourage or discourage diversification …