He was also a member of the temporary committee on policy challenges and budgetary means of the enlarged Union 2007–2013.
Lamassoure is a member of the Reconciliation of European Histories Group.He was in charge of writing parts of the Treaty of Lisbon.
Alain Lamassoure is a well-known pro-European.
He is a member of the European Movement France, which he has been vice-president of, and has a privileged relationship with the diverse European federalist groups.