The United States and the European Union (EU) share an extensive, dynamic, and for many a mutually beneficial political and economic partnership. A growing element of that relationship is the role that the U.S. Congress and the European Parliament (EP) have begun to play, including in areas ranging from foreign and economic policy to regulatory reform. Consequently, some officials and experts on both sides of the Atlantic have asked whether it would be beneficial for Congress and the EP to strengthen institutional ties further and to explore the possibility of co-ordinating efforts to develop more complementary policies in some areas. This book discusses the transatlantic legislative co-operation between the United States Congress and the European Parliament.