Judgment_paragraph 46 · European Parliament v Council of the European Union (C-363/14)

46According to settled case-law of the Court, the adoption of the essential rules of a matter such as that at issue in the present case is reserved to the EU legislature, and those rules must be laid down in the basic legislation. It follows that the provisions laying down the essential elements of the basic legislation, the adoption of which requires political choices falling within the responsibilities of the EU legislature, cannot be delegated or appear in implementing acts (see, to that effect, judgment in Parliament v Council, C‑355/10, EU:C:2012:516, paragraphs 64 to 66).