Abstract
Despite extensive research examining the implications of European integration, the determinants of national adaptation to EU legislation remain poorly understood. There is particular debate as to whether successful adaptation is determined by the compatibility of national and European procedures and practices ('goodness-of-fit'), or domestic institutional veto points. When implementing the Packaging Waste Directive, Britain introduced new legislation swiftly despite severe mismatches between European and national standards and regulatory styles. However, the German government encountered prolonged difficulties negotiating domestic veto points despite making only incremental changes to existing legislation. Whilst this contradicts 'goodness-of-fit' explanations of integration, the situation was reversed for implementation of the Directive's environmental objectives, with Germany exceeding European requirements but Britain struggling to achieve compliance. It is argued that although institutional vetoes are important during transposition, national resistance is often prompted by poor policy fit during both legal and practical implementation.

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