Judgment of the Court (Third Chamber) of 16 July 2026.#PQ v Országos Idegenrendészeti Főigazgatóság Dél-alföldi Regionális Igazgatóság and Alkotmányvédelmi Hivatal.#Reference for a preliminary ruling – Citizenship of the European Union – Article 20 TFEU – Family member of a Union citizen who has never exercised his or her right of freedom of movement – Area of freedom, security and justice – Border controls, asylum and immigration – Directive 2008/115/EC – Return of illegally staying third-country nationals – Threat to national security – Statement by a specialist national authority – Statement of reasons – Access to the file – Classified information – Primacy of EU law.#Case C-26/25.