Guy Verhofstadt has known as for EU member states to lose their veto energy.
The Belgian MEP demanded modifications to European treaties to reform the decision-making course of because the bloc seems to be to enlarge.
Mr Verhofstadt singled out the unanimity rule which implies all 27 international locations should agree earlier than Brussels could make selections in delicate areas akin to overseas coverage and tax.
It might result in bitter wrangling and any single member state can use its veto to torpedo a proposal.
Mr Verhofstadt stated: “Are you able to think about a Europe with 35 members with out reshaping the Fee and with the unanimity rule intact? Completely unworkable!”
He added: “If we open negotiations with candidate member states, we additionally must open the controversy on treaty reform.”
His feedback come after European Fee President Ursula von der Leyen addressed the opportunity of treaty modifications in her State of the Union speech within the European Parliament earlier right now.
She stated: “I’ll all the time help this Home – and all of those that need to reform the EU and make it work higher for residents.
“And sure, which means together with by a European Conference and treaty change if and the place it’s wanted.”
However she added that Brussels “can not… anticipate treaty change to maneuver forward with enlargement”.
It comes as the controversy is raging throughout the bloc over a timeline for welcoming new members.
Ms von der Leyen has rejected European Council President Charles Michel’s name for a 2030 deadline.
Eight international locations – Turkey, North Macedonia, Montenegro, Serbia, Albania, Moldova, Ukraine, and Bosnia and Herzegovina – at the moment maintain candidate standing.