The legislative dynamic in the post-Amsterdam era is increasingly challenging the Schengen Acquis as it leads to both legal harmonization and fragmentation. SIS, EURODAC, Prum and, more recently, VIS have changed Europe s law enforcement authorities considerably. However, it is questionable whether the fragmented legal harmonization can provide sufficient compensatory measures in light of the increasing international criminal links and illicit migration within the Schengen countries. This analysis focuses on the theoretical considerations regarding the various concepts of Europeanization, and...