Principle of Loyalty in EU Law

This is an open access title available under the terms of a CC BY-NC-ND 3.0 International licence. It is free to read at Oxford Scholarship Online and offered as a free PDF download from OUP and selected open access locations.Despite its seemingly innocuous wording, in what is now Article 4 (3) TEU, the principle of loyalty has had a significant impact in deepening the reach of EU law within the M...