The creation of the European Convention gave rise to yet another academic dispute on the logic of constitutional change in the European Union. Some argued that this would be remembered as a turning point in the history of European integration: after half a century of piecemeal and instrumental reforms, the EU seemed to have reached its constitutional moment. A debate on the finalité politique would finally take place, within a new framework that might well shape future changes. Executive officials and diplomats could no longer ignore national parliamentarians and MEPs, and they would be forced to argue, this time and in the future, in the eyes of the public. In turn, this might compel them to agree on a more ambitious and comprehensive cons...