Constitutional issues arising from the ruling in the Pupino case – Court of Justice holds that the duty of consistent interpretation applies also in relation to framework decisions – Analysis of the extent to which the doctrine of consistent interpretation can (and should) be transposed to the area of police and judicial cooperation in criminal matters – Consequences for possible extension of other constitutional doctrines elaborated in the context of the first pillar to the third pillar – Extent to which third pillar acts can become a vehicle for the enforceability of fundamental rights as general principles of Union law – The possibility of invoking Francovich damages for breaches of Union law – To what extent can the Pupino reasoning be extended to the second pillar?