A dominant view among EU scholars holds that European integration had advanced at the expense of national parliaments’ authority, with domestic legislatures only starting to claw back their say over EU policy-making since the Maastrich. Pierre Haroche challenges these notions, arguing that national parliaments had a hand in shaping the path of European integration and competences of EU institutions long before the treaty reforms of the 1990s. In his article “The inter-parliamentary alliance: how national parliaments empowered the European Parliament” published in the Journal of European Public Policy, Pierre shows that national parliaments made their approval of transferring legislative competences to the supranational level conditional on the empowerment of the European parliament. Connected through national political parties, most (albeit not all) national parliaments perceived the empowerment of the European parliament as an adequate compensation for giving up their competences at home. Analysing the first transfer of budgetary powers to the European parliament in 1970 and the first transfer of legislative powers via the Single European Act in 1986, Pierre shows that at these critical junctures of European integration, empowerment of the European parliament was fostered by an inter-parliamentary alliance between the European parliament and its national counterparts. He concludes that far from being victims of European integration, national parliaments “successfully used their national powers to impose the parliamentarization of the EU regime.”