Such change would currently require a unanimous approval of all EU members, and Piketty has suggested that a change of rules might be necessary, saying that if countries representing 80% of EU's population or GDP ratify a treaty, it should be approved.
Piketty navrhl, že taková změna pravidel může být nutná - pokud země reprezentující 80% obyvatel EU nebo GDP smlouvu ratifikují, měla by být schválena.