36According to settled case-law, 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 (see, to that effect, judgment of 26 March 1987, Commission v Council, 45/86, EU:C:1987:163, paragraph 11; judgment of 11 June 1991, Commission v Council, C‑300/89, EU:C:1991:244, paragraph 10; Opinion 2/00 (Cartagena Protocol on Biosafety) of 6 December 2001, EU:C:2001:664, paragraph 22; and judgment of 14 June 2016, Parliament v Council, C‑263/14, EU:C:2016:435, paragraph 43).
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