By allowing exporters to produce under asymmetric increasing marginal costs, we investigate the impact of tariff discrimination when considering exporters' endogenous choice of competition mode. Discriminatory tariffs lead to Cournot competition, whereas uniform tariffs lead to diverse modes of...

We examine the superiority of the uniform versus discriminatory tariffs in global welfare by taking into account the asymmetric increasing marginal costs between exporters and endogenous delegation problem. First, depending on the degree of product differentiation under Bertrand competition,...