The fight over Mexican tuna, and whether it is truly fished using dolphin safe practices, rages on. Mexico recently won a two decade long fight to get its tuna labeled dolphin safe. The WTO this month ruled in its favor. But the U.S. still refuses to allow Mexican tuna with a dolphin safe label on store shelves. Mexico says it's had enough and is preparing to retaliate with trade sanctions on U.S. imports. Ensenada, Baja California, was once the thriving heart of the Mexican tuna industry.