It is analyzed whether the EU’s Eastern Enlargement has been an obstacle to further European integration. Does the Enlargement provoke protectionist policies in core member countries, such as Germany? The paper deals with the institutional settings pertaining to labor supply and trade in services within the Union. It is shown that Germany is one of the two EU 15 countries still denying free access of new member countries to its labor market. In addition, Germany has been pushing for protection regarding trade in services. Statistics indicate that German protection and EU free trade have made the UK a winner in the game of labor migration.