This chapter presents the EU’s responses with respect to three closely related policies: the approval of genetically modified (GM) crops for sale and (separately) for cultivation and efforts to lift member state bans on EU-approved GM varieties. These most similar cases differ in outcome; with the EU resuming approvals for sale (a change sufficient to placate Argentina and Canada, but not the United States), but not for cultivation and failing to address member state bans despite very permissive decision rules. In these cases, no tariffs were threatened and there was no exporter mobilization. Commission trade officials did push to accelerate approvals. The Commission, which was more favorably disposed toward biotechnology than most of the member states, was able, with the help of very a permissive decision rule, to overcome opposition to approvals for sale, but not for cultivation, reflecting greater concern among regulators about the environmental impacts of GM cultivation than about the safety of GM varieties. The member state governments also balked at forcing their peers to change their policies. There is little evidence that the WTO’s adverse ruling affected any of the protagonists’ preferences.