Judgment_paragraph 43 · European Parliament v Council of the European Union (C-658/11)

43It should be noted at the outset that the choice of the legal basis for an EU measure must rest on objective factors amenable to judicial review, which include the aim and content of that measure. If examination of a measure reveals that it pursues two aims or that it has two components, and if one of those aims or components is identifiable as the main one, whereas the other is merely incidental, the measure must be founded on a single legal basis, namely that required by the main or predominant aim or component. If, on the other hand, a measure simultaneously pursues a number of objectives, or has several components, which are inseparably linked without one being incidental to the other, so that various provisions of the Treaty are applicable, such a measure will have to be founded, exceptionally, on the various corresponding legal bases (see, to that effect, Case C‑130/10 Parliament v Council EU:C:2012:472, paragraphs 42 to 44).