Judgment of the Court (Grand Chamber) of 3 June 2021.#Hungary v European Parliament.#Action for annulment – Article 7(1) TEU – European Parliament resolution on a proposal calling on the Council of the European Union to determine the existence of a clear risk of a serious breach of the values on which the European Union is founded – Articles 263 and 269 TFEU – Jurisdiction of the Court – Admissibility of the appeal – Challengeable act – Article 354 TFEU – Rules for counting votes in the Parliament – Rules of Procedure of the Parliament – Rule 178(3) – Concept of ‘votes cast’ – Abstentions – Principles of legal certainty, equal treatment, democracy and sincere cooperation.#Case C-650/18.