This case note analyses the French Conseil constitutionnel's CETA decision of 31 July 2017 (ECLI:FR:CC:2017:2017.749.DC). The Conseil was the first national court to reach a substantive judgment on... Show moreThis case note analyses the French Conseil constitutionnel's CETA decision of 31 July 2017 (ECLI:FR:CC:2017:2017.749.DC). The Conseil was the first national court to reach a substantive judgment on whether CETA was compatible with an EU Member State’s constitution, concluding that there was nothing in CETA that was at odds with French constitutional law. Given that CETA will also be subject to ex ante review at the European Court of Justice requested by Belgium, the Conseil constitutionnel’s decision is another milestone in the judicial saga surrounding CETA, but not the end of the road. The note argues that the Conseil employed a dynamic and cooperative interpretation of sovereignty and showed a strong attitude of deference both to France’s political branches and to the EU in terms of international treaty-making. There are, however, some aspects where the decision would have benefited from greater clarity. Nonetheless, instead of undermining France’s constitutional order, the Conseil confirmed the fundamental commitment of France to European integration and international cooperation. More particularly, it refrained from unduly interfering with the ability of the EU and its Member States to continue operating as a collective international actor. Show less