Mexico has appealed a World Trade Organization ruling that U.S. curbs on imports of Mexican tuna, designed to protect dolphins, are more restrictive than needed.
Sales of Mexican tuna to the U.S. have been limited since 1991 under Commerce Department provisions that determine when products can be labeled as dolphin-safe. The U.S. adopted the rules in response to complaints that Mexico’s fishing techniques hurt dolphins. Mexico says its tuna-catching practices and regulations meet global standards.