He served on Parliament's Budgetary Control committee and the Constitutional Committee during the period of the rejection of the Constitutional treaty by France and the Netherlands and the negotiation of the Lisbon Treaty, supporting the Parliament's line on this (Richard Corbett and Inigo Mendez de Vigo report).
Ia pernah bertugas di komite Pengendalian Anggaran Parlemen dan Komite Konstitusi selama periode penolakan perjanjian Konstitusi oleh Prancis dan Belanda dan negosiasi Perjanjian Lisbon dalam mendukung garis Parlemen (laporan Richard Corbett dan Inigo Mendez de Vigo).