Freshly caught Gulf of Mexico white shrimp steamed for lunch at the Ditcharo Seafood Dock in Buras, Louisiana on Aug. 20, 2015. Gulf shrimpers, many from Vietnam and Cambodia, fear that a looming Pacific trade deal will do little to stem the flow of imported shrimp from Asia that is pressuring dock prices to their lowest levels since 2009. Photo taken August 20, 2015. REUTERS/David Lawder