Assessing the effects of tariff reform on U.S. food manufacturing industries: the role of imperfect competition and intermediate inputs
研究美国食品制造业中，中间投入和最终产品关税改革对行业均衡的影响，发现中间投入关税效应占主导，导致企业数量和产出增加，表明现有关税结构不利于国内食品制造商。
Recent work indicates that the joint effects of intermediate input and final output tariff reforms on equilibrium in the differentiated final products sector are analytically ambiguous. This issue is addressed empirically for disaggregate, imperfectly competitive U.S. food manufacturing industries. The input tariff effect dominates in most industries, leading to increases in the number of U.S. firms and total industry output as a result of tariff reform. This provides evidence that the existing U.S. tariff profile discriminates against domestic food manufacturers, as input tariff effects outweigh the protection offered by output tariffs. This conclusion is robust to changes in the degree of interfirm rivalry (monopolistic competition or cournot oligopoly).