Future trade negotiations will incorporate environmental concerns. This study presents a framework to evaluate whether the United States would be willing to adopt a pesticide restriction in exchange for European Union liberalization of producer support. It outlines the conditions that must be met if a bargain is to occur. Partial equilibrium commodity models test whether the conditions for a bargaining solution are satisfied. The research results indicate that a potential bargain is possible for stricter U.S. environmental regulations in coarse grains if there is a sufficiently large positive EU externality. Conditions in the oilseed market preclude a bargain.