Along with prosperity and peace, the European Union has brought its citizens unprecedented opportunities and freedom to study, work, travel and trade within Europe’s borders. The EU has helped strengthen democracy, human rights and legal reforms in many member states and aspiring candidate countries in addition to continuing its original role as a mechanism for peace. But the EU’s founding rules and institutions were designed for a far smaller union and it now risks suffocation under its own weight and becoming one large dysfunctional family. Replacing the old constitutional norms or creating a new treaty to deal with the complex 28-member union will be an imperative. Furthermore, future enlargement will remain a contentious issue as the EU absorbs its newest members and the next wave of candidates fuels the ongoing debate about who can join and where the ultimate boundaries of Europe lie.