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It is uncontested that the European Union (EU) – endowed with distinct international legal personality (pursuant to Article 47 of the Treaty on European Union) and being a subject of international law – is bound by relevant norms of customary international law (CIL). Rules of CIL form an integral part of the EU legal order, and the Court of Justice of the EU (CJEU) must use CIL at least as an interpretive tool. Still, the CJEU’s interpretations of CIL norms and the interpretative methods and techniques it employs have received little attention in legal scholarship. This chapter aims to map and understand the ways in which the CJEU interprets CIL rules and compares them to those that exist for the interpretation of treaties under the Vienna Convention on the Law of Treaties.
Institutional designers of judiciaries often want to provide the appearance of impartiality. As a result, many collegial courts issue per curiam rulings in which judges’ votes are not public. An extensive scholarship, however, provides evidence that ideology and mechanisms of retention affect judicial decision-making. Do per curiam rulings actively mitigate or provide cover for ideological and career-oriented judicial decision-making? I argue that – when serving as the rapporteur (opinion-writer) – a judge on a civil law per curiam court can steer their panel towards the outcome their appointer prefers. When their appointing government turns over, nonetheless, a judge is not compelled to change their decision-making to be in line with their new government, as per curiam rulings protect them from retaliation. An analysis of decisions at the Court of Justice of the European Union provides evidence for this account.
The concept of “constitutional identity” in the context of the EU has evolved significantly over the years, leading to complex debates and challenges. This chapter explores the historical trajectory of constitutional identity in the EU, from its early emergence in response to concerns about sovereignty to its current state of political and legal contestation. The chapter highlights that while constitutional identity is a global concept, the European experience exhibits distinct characteristics. Two noteworthy factors contributing to this distinctiveness are Europe’s legal integration and the inclusion of an identity clause in EU law (Article 4(2) TEU), a unique feature in supranational constitutionalism. The chapter argues against abandoning the concept of constitutional identity due to its recent abuses, asserting that it is a legally recognized notion within EU law. Instead, the chapter claims the focus should be on identifying and addressing abuses while acknowledging the concept’s importance in balancing competing fundamental principles within the EU legal framework. It concludes by emphasizing the need to distinguish between legitimate uses of constitutional identity and its abusive applications, advocating for the protection of constitutional identities that align with EU core principles and calling for the development of a European constitutional identity as a complementary concept.
Civil society actors play a crucial role in ensuring that breaches of environmental law are identified and reported to the bodies responsible for compliance. Nevertheless, civil society groups face severe limitations in respect of access to justice in environmental matters. In the European context, the literature concerning opportunities for legal mobilisation has long focussed on mobilisation efforts in relation to European Union environmental law, largely via national legal systems or the European Court of Justice (CJEU). Relatively underexplored, however, has been the role of (non-)compliance systems outside the EU’s institutional structure, operating with a similar geographical scope. In particular, the potential of the Convention on European Wildlife Conservation (1979) and its corresponding (non-)compliance mechanism has thus far been overshadowed by academic discourse on the mechanisms of the EU. The chapter argues that while the looming shadow of CJEU judgments lends an indispensable lever to NGOs seeking to protect biodiversity, less confrontational and civil society-oriented compliance mechanisms provide important additional avenues for legal mobilisation.
This Article deals with selected issues of judicial protection that arise in the context of the sanctions adopted by the EU against Russia and Belarus after the 2022 invasion of Ukraine. As most cases challenging the sanctions are pending, this Article draws lessons from the previous case law on EU restrictive measures. It explores what aspects of the sanctions escape judicial review, then profiles of external (or formal) legality of the sanctions, of internal (or substantive) legality, and concludes by assessing the overall role of the Court in EU foreign affairs. The discussion shows that the case law in this area of EU administrative law converges to a great extent with other areas of EU competence, but tensions remain in how the Court may impose substantial constraints to executive discretion in the field of Common Foreign and Security Policy.
In a crisis, ordinary rules must often give way to a more expedient approach. Such emergency competences tend to favour executive decision-making over legislative procedures. In a European Union (EU) shaken by successive crises, this situation risks leading to permanent competence creep. While considerable attention has been devoted to the impact of crisis on legal and political decision-making within the Union, the position of the Court of Justice (CJEU) – and its impact on the distribution of powers within the EU – has been less researched. This Article fills the gap by exploring how the Court reviews the exercise of power in times of crisis by executive actors at the Union and Member State levels. Using migration law as a case study, it qualitatively and quantitatively examines how the CJEU has responded to crisis both in its scrutiny of measures of containment, and through its adjudication of migration cases in general before and after the acute phase of the 2015 refugee crisis. The Article shows that the crisis has led the CJEU to take a more lenient approach towards the executive powers at both the Union and the Member State level. It argues that this effectively amounts to a withdrawal from the judicial control function and enables an expansion of executive power that is likely to have effects lasting beyond any given emergency.
This introductory Article sets out the background and summarises the content of the Symposium on ‘The Court of Justice of the European Union (CJEU) as a Relational Actor’. Observing that the CJEU has been a key player in shaping European legal integration, the Symposium takes as its starting point that courts – and the CJEU is no exception in this regard – are unable to drive developments in isolation. For the Court to carry out its role as guarantor of the Treaties and guardian of the rule of law in the Union, it needs not to isolate itself but to interact with other European Union (EU) and national institutions. Relations, the Symposium argues, are not only unavoidable but also legitimate and even vital for the adequate execution of the judicial function. This introduction briefly explores six of the Court’s most important relationships: those with the other EU institutions; the courts of the Member States; the Member States themselves; the parties appearing before it; other international courts; and the general public. It then summarises the contributions and highlights how they complement each other in examining the CJEU as a relational actor.
Reflexive sociology can contribute to a more holistic understanding of the role of the Court of Justice of the European Union (CJEU/Court) as a relational actor. This article draws on the Bourdieusian concept of (legal) field as an analytical framework to trace the power relations between the Court and its interlocutors. The analysis develops around four distinct conceptualisations of the Court as a legal field, ranging from its institutional architecture to the three mainstream judicial routes for a case to reach its docket (preliminary reference procedure, action for annulment and infringement procedure). These showcase the varied interactions among the different actors that either shape the Court as an institution or engage with it in the course of its adjudicative function. According to field theory, these interactions take the form of power struggles between the actors comprising a legal field in order to take control of the determination of the law. The actors of a legal field enjoy different positions that formulate their objective relations, and which are contingent on their disposition and capital. Each of the conceptualisations of the Court as a legal field in this article points to distinct power struggles and relations among a similar set of actors. Consequently, using field theory can be a very useful tool to contextualise the role of the Court and to systematically study its judgments, modus operandi and position in the European legal field under a reflexive lens that accentuates the significance of social space and power relations, and pushes for socio-legal and empirical insights.
There has been a turn to fundamental rights in environmental and climate cases before national and international courts in recent years. We know very little whether there has been such a turn in relation to European Union (EU) law before the Court of Justice of the European Union (CJEU). The CJEU occupies an increasingly relevant position in this nexus between environmental law and human rights because of strong and effective EU enforcement mechanisms, the abundance of specific EU secondary environmental law, the growing role of fundamental rights since 2009 and the self-standing provision on the environment in Article 37 of the Charter. An analysis of the case law, nonetheless, shows that Charter rights that can be used as ‘swords’ in the interest of environmental protection have so far played only a limited role. After explaining the absence of a rights turn, we argue that such a turn is warranted before the CJEU as well, also from a legal perspective. This article examines two potential avenues. The CJEU can derive positive obligations from relevant Charter provisions, including Articles 2 (right to life) and 7 (right to respect for private life and the home) of the Charter, or it can rely more extensively on Article 37 as a tool for interpreting primary and secondary EU law in an environmentally friendly way.
The concept of a systemic fundamental rights violation refers to a particular set of violations that are both widespread and embedded, so their reoccurrence may be assumed to be likely. It takes on at least two distinctive roles in EU asylum law and policy. One role is linked with the functioning of the principle of mutual trust, a principle that obliges Member States to recognise each others’ systems and decisions, presuming them to be legal, apart from exceptional cases. In this context, the principle sets the standard from when the presumption of legality is rebutted. In its conceptualisation and application, it is in tension with European human rights law, and, for a period, set up frictions between the CJEU (in NS/ME and Opinion 2/13) and the ECtHR (in MSS and Tarakhel). This tale of judicial frictions is not merely of historical interest. Its legacy is, we conclude, a thin concept of systemic breach, characterised by an over-individualized approach to assessing the human rights risks. The second role for the concept of systemic violations relates to embedded violations, including at the EU’s external borders. We demonstrate the utility of this other invocation, in particular as systemic breaches often signal deeper rule of law issues both within particular national systems and embedded within the Common European Asylum System (CEAS). We illustrate that the CEAS itself brings about systemic human rights violations. Identifying and responding to the “systemic” in asylum increasingly relates to the credibility of the EU as a Union based on the respect for fundamental rights and the rule of law.
In this introductory chapter to Part II, we will examine the key specifics of the EU legal order and investment protection mechanisms under EU law, with a view to expose systemic similarities and differences between the EU legal order and international investment law (IIL). First, we will explain the basic features of the EU legal order. Second, we will expose the modus operandi of the EU judicial system and the Court of Justice of the European Union (CJEU) as its integral part. Finally, we will explain the scope of investment issues in the EU legal order to understand the reasons which render IIL more attractive to intra-EU investors than EU law. This chapter thus provides the context to the discussion on intra-EU dispute settlement in the next chapter. The divergent approaches to intra-EU ISDS between investment tribunals and the CJEU epitomise the fundamental differences of the two legal orders discussed in this chapter. The tensions between these two legal orders can only be understood in light of the constitutionalisation of the EU legal order, the process in which the CJEU plays the key role.
In this chapter we examine how international investment law in relations between the Member States poses a challenge to EU law and its autonomy, hindering internal market integration as one of the core EU objectives, and the rule of law in the EU as its core value. We analyse tensions between international investment law and EU law, focusing first on intra-EU international investment agreements and the objectives of EU integration, and second on intra-EU investment treaty arbitration and the autonomy of the EU legal order. The Achmea judgment of the CJEU is the apotheosis of these tensions, and it has been endorsed in subsequent CJEU judgments. In the final part of this chapter, we analyse legal and policy implications of this jurisprudence, in the broader context of EU integration and the rule of law in the EU.
The high European judiciaries from Strasbourg, to Luxembourg, to Paris have become powerful institutional actors whose authority has moved past the interpretive, to the normative, to the political, and to the constitutional levels. At the very moment, however, that the judiciary blossoms into a full-fledged institution of government, it must find some new way to construct its legitimacy. This chapter thus sketches out two case studies that offer different, yet related, attempts to reconstruct judicial legitimacy in contemporary Europe. The first focuses on the judicial appointments reforms concerning the Court of Justice of the European Union and the European Court of Human Rights. The second turns to ongoing debates concerning the use of judicial analytics, the reform of the traditional French mode of composing judicial decisions, and other measures designed to increase access to French judicial reasoning. In a long series of interlocking reforms, both the French and European high courts have managed to further increase their already burgeoning clout.
The Court of Justice of the European Union (CJEU) uses a chamber system to more efficiently decide cases. To what extent, and under what conditions, does the CJEU’s chamber system undermine the consistency of the Court’s application of EU law? This paper contributes to the literature on the internal organization of collegial courts by presenting a computational formal model that predicts (a) that hearing cases in smaller chambers undermines the consistency of the Court’s application of EU law and (b) that the magnitude of this effect is larger when judges’ preferences are more heterogeneous and smaller when plaintiffs strategically bring cases. Based on these findings, I use machine learning and empirical data on CJEU judgments in infringement cases to estimate the degree to which we should expect the chamber system to undermine the consistency of the CJEU’s application of EU law in practice.
This article presents the CJEU Database Platform, which provides scholars with an extensive collection of easily accessible, research-ready data on the the universe of cases, decisions, and judges at the Court of Justice of the European Union (CJEU). The CJEU Database Platform provides a foundation for the broader CJEU Database currently being developed by The IUROPA Project, a multidisciplinary group of scholars researching judicial politics in the European Union (EU). In this article, we illustrate how the CJEU Database Platform opens the door to new areas of theoretical and empirical research on judicial politics in the EU.
John Witte, Jr.’s book The Blessings of Liberty contains an important message about the origins and continuing relevance of religious liberty. Based on careful historical analysis of the development of religious liberty in England and the US, Witte demonstrates the importance of Protestant thinking both to the right and to human rights more generally. In the process he refutes both Christian and post-Enlightenment sceptics. His discussion of contemporary US and European law shows how much the right is still needed today, despite the claims of contemporary scholars that freedom of religion and belief is a redundant right.
This chapter studies the methodology used by the CJEU to identify CIL. In addition, it assesses whether that methodology is similar to, or differs from, that which other international courts and tribunals use (based on the two-element approach). The chapter argues that the notion of consensus can assist the CJEU in the identification process of CIL. In particular, two sets of cases are examined. First, those in which the CJEU has dealt with the interaction between the Resolutions of the UNGA and CIL in the identification process. And secondly, cases where general principles of public international law have been used to identify CIL. Resorting to public international law concepts (consensus) and techniques (external references to the PCIJ or the ILC) to identify CIL does not prevent the CJEU from adopting a particularist approach. The judicial practice analysed highlights the tension converging when the CJEU exercises its jurisdiction. A push towards autonomy (or particularism) can be noted on the one hand. On the other hand, the CJEU cannot avoid its nature as an international tribunal. The chapter argues that it is precisely for this reason that the CJEU resorts to a ‘flexible consensualist approach’ when faced with the identification of CIL thus allowing some room for cross-fertilization between international courts and tribunals.
Much of the debate about the EU and customary international law addresses the conditions under which customary international law is applied within the EU legal order, such as when it is used to challenge the validity of EU acts. To what extent can the EU also contribute to the development and identification of customary international law? This chapter argues that the EU is not only bound by customary international law, but can also contribute to the development and identification of customary law in its own right. It examines these questions in light of the International Law Commission’s 2018 Draft Conclusions on Identification of Customary International Law. It first discusses some of the conceptual issues faced by the ILC and some of the ways that the EU may contribute to the development of customary international law through its practice and opinio juris. The chapter then turns to the role of the Court of Justice of the European Union and the role it plays in the development and identification of customary international law. It argues that EU practice is relevant when determining rules that apply to the relationship between the EU and third states and organizations.
This chapter discusses how customary international law enters the sphere of EU law and to what extent it determines the relationship between the EU institutions, its member states and individual persons. Against this background, it is examined how customary international law is integrated into the EU legal order, what status it enjoys within that legal order, how it can be applied by EU institutions and whether it can serve as a benchmark for judicial review. Assuming that EU law is an autonomous domestic legal system, these questions are discussed from the perspective of EU constitutional law. Here it is argued that the Court of Justice of the European Union, in evaluating these issues, focusses too much on the idea of the autonomy of EU law. In order to provide provisions of customary international law with practical effect the validity of EU law must also be able to be reviewed on the basis of international law standards.