This book critically examines how and why Eastern enlargement has impacted on EU human rights policy. By drawing on the EU’s intervention in human rights provision in Romania before 2007, it is demonstrated that the feedback effects of this intervention have led to the emergence of an EU child rights policy. Eastern enlargement has also raised the profile of Roma protection, international adoptions and mental health at the EU level. The impact of these developments has been further reinforced by the constitutional and legal provisions included in the Lisbon Treaty. It is argued that Eastern enlargement has led to the emergence of a more robust and well-defined EU human rights regime in terms of its scope and institutional clout. This book makes a substantial contribution to the scholarship on EU enlargement, Europeanisation and EU human rights policy by providing empirical evidence for the emergence and persistence of EU institutional and policy structures upholding human rights.