Criticism
The idea is criticised by opponents of a multi-speed Europe. A source in the French EU Presidency stated: "Enhanced cooperation is a very sensitive issue because it has never been implemented. It allows several member states to go forward faster than others, and it is not necessarily the image we want to give of the EU." Likewise in 2002 when the Treaty of Nice was being negotiated the UK's current deputy prime minister, then-Liberal MEP, Nick Clegg attacked the idea as shaking the very foundation of the EU.
Read more about this topic: Enhanced Co-operation