In the European Union, enlargement, special arrangements for the expansion of the Schengen Area, and the gradual development of a stronger EU role in immigration have added new complexity to the policy landscape, leading to both new patterns of movement and new policies for governing immigration from outside of the European Union's 27 Member States. The research offered here focuses on migration policies, trends, and common challenges that affect Europe at a supranational level—from free movement to asylum policy and the management of EU borders.