“Agreements concluded by the Union are binding upon the institutions of the Union and on its Member States.” (Article 216(2) TFEU).
According to the Case-law of the Court of Justice of the European Union (CJEU), International law takes precedence over (secondary) EU law: “It should also be pointed out that, by virtue of Article 216(2) TFEU, where international agreements are concluded by the European Union they are binding upon its institutions and, consequently, they prevail over acts of the European Union (see, to this effect, Case C‑61/94 Commission v Germany [1996] ECR I‑3989, paragraph 52; Case C‑311/04 Algemene Scheeps Agentuur Dordrecht [2006] ECR I‑609, paragraph 25; Case C‑308/06 Intertanko and Others [2008] ECR I‑4057, paragraph 42; and Joined Cases C‑402/05 P and C‑415/05 P Kadi and Al Barakaat International Foundation v Council and Commission [2008] ECR I‑6351, paragraph 307)” .
Arguably, acts adopted by bodies established by the EU-UK TCA could also enjoy primacy: “7 It follows [...] that decisions of the EEC-Turkey Association Council are measures adopted by a body provided for by the Agreement and empowered by the Contracting Parties to adopt such measures. 18 In so far as they implement the objectives set by the Agreement, such decisions are directly connected with the Agreement and, as a result of the second sentence of Article 22(1) thereof, have the effect of binding the Contracting Parties. 19 By virtue of the Agreement, the Contracting Parties agreed to be bound by such decisions and if those parties were to withdraw from that commitment, that would constitute a breach of the Agreement itself.
Source : © European Union, 2021 - EP