Arkolakis, Costinot and Rodriguez-Clare (ACR, 2012) prove that, conditional on the change in openness, the welfare gains from foreign trade reforms are quantitatively identical across single-sector trade models with radically different micro-foundations. We generalize this result to domestic and...

We study the procompetive effects of trade policies against a foraign oligopoly in a model of vertical product differentiation. We show that a uniform tariff policy like the Most Favored Nation (MFN) clause is always welfare superior to free trade because of a pure rent-extraction effect....