German implementation error lets Al Qaeda Suspect Walk Free

As European integration gets increasingly regulatory, it will be increasingly important for parliaments in the member states to implement EU directives correctly.  If they don't, the consequences could be very serious.  For example, Germany recently had to release a suspected al Qaeda financier because of a failure, according to Germany's federal constitutional court, to implement the European Arrest Warrant in a way compatible with the German Constitution.  While the kind of technicality that lead to this blow to Germany's anti-terror efforts is likely only in questions of political integration, failure to implement laws correctly in the economic arena could also have consequences for things like public financing, social programs, and environmental protection.