Case C-193/16: Judgment of the Court (Third Chamber) of 13 July 2017 (request for a preliminary ruling from the Tribunal Superior de Justicia del País Vasco — Spain) — E v Subdelegación del Gobierno en Álava (Reference for a preliminary ruling — Citizenship of the Union — Right to move and reside freely in the territory of the Member States — Directive 2004/38/EC — The second subparagraph of Article 27(2) — Restrictions on the right of entry and the right of residence on grounds of public policy, public security or public health — Expulsion from the territory for reasons of public policy or public security — Conduct representing a sufficiently serious present and genuine threat for a fundamental interest of society — Present and genuine threat — Concept — Union citizen residing in the host Member State where he is serving a prison sentence for repeated child sexual abuse offences)