WP4's overall objective is to investigate the functioning of the EU's internal and external borders in the governance of migrants' mobility, thus meeting directly the demand that "the relation between asylum systems and Schengen must be duly taken into consideration". It builds on the results of WP2 and 3, which focus on the regulatory mechanisms of the CEAS and the governance of national asylum reception systems, to analyse the extent to which their implementation is driving a reintroduction of internal borders.
