The Schengen Agreement was meant to erase the national borders between countries to allow the unrestricted movement of persons. Immigration from crises in Africa, Syria, and internal migration from poorer to richer countries of the EU has led some countries to question the benefits of being a Schengen country. The issue of the free flow of immigrants into EU countries has also led to the rise of nationalist, anti-immigration parties in some EU countries. Should the EU reconsider or modify the principle of the free movement of persons?

How can the EU balance the fundamental policy of free movement of persons with the concerns of member states in controlling their borders?