The chapter discusses the questions of the legal meaning of Union citizenship as well as of who should be included in its status. It particularly focuses on how more could be done at the EU level to integrate the millions of lawfully residing third-country nationals in the EU into the internal market. This could in part be done by broadening the personal scope of the right to free movement in the EU, so that it becomes accessible to more persons than the Member States’ own citizens. Simultaneously, it is argued, the status of Union citizenship could be given a deeper legal meaning, detached from a dependency on freedom of movement, but channelling the values of the EU, such as respect for the rule of law and adherence to the fundamental rights guarantees of the Charter of fundamental rights of the European Union. The examples of case law from the Court of Justice of the European Union, such as Ruiz Zambrano, Delvigne and IN, are given to show the legal forcefulness of Union citizenship without freedom of movement, as well as the legal broadening of the personal scope of freedom of movement respectively.