📚 Establishment and Powers of Key EU Institutions and the Process of Enlargement | 欧盟主要机构的建立与权力及扩大进程
The European Union is often described as a sui generis political system because it combines supranational and intergovernmental decision-making through a set of institutions created by successive treaties. This article examines the establishment and powers of the key EU institutions and then analyses how the process of enlargement has been governed, from the original six member states to the current twenty-seven. Understanding these institutional foundations is central to Edexcel A-Level Government and Politics, especially for questions on the distribution of power, democratic legitimacy and the future of European integration.
欧盟通常被描述为一个独特的政治体系，因为它通过一系列条约设立的机构将超国家决策与政府间决策结合起来。本文考察欧盟主要机构的建立与权力，然后分析扩大进程是如何管理的，从最初的六个成员国到目前的二十七个。理解这些制度基础是爱德思 A-Level 政治课程的核心内容，尤其涉及权力分配、民主合法性与欧洲一体化未来等问题。
1. Constitutional Foundations and Treaty Evolution | 宪法基础与条约演变
The institutional architecture of the EU rests on a series of foundational treaties. The Treaty of Paris in 1951 established the European Coal and Steel Community with a High Authority, a Council, an Assembly and a Court. The Treaties of Rome in 1957 created the European Economic Community and Euratom, sharing common institutions. The Merger Treaty of 1965 combined the executives into a single Commission and Council, while the Maastricht Treaty of 1992 formally established the European Union and introduced the co-decision procedure. The Treaty of Lisbon in 2009 abolished the old pillar structure, gave the EU legal personality and created new permanent posts such as the President of the European Council and the High Representative for Foreign Affairs.
欧盟的制度架构建立在一系列基础条约之上。1951 年的《巴黎条约》成立了欧洲煤钢共同体，设有高级机构、理事会、议会和法院。1957 年的《罗马条约》创建了欧洲经济共同体和欧洲原子能共同体，共享一些共同机构。1965 年的《合并条约》将各执行机构合并为单一的委员会和理事会，而 1992 年的《马斯特里赫特条约》正式建立了欧盟并引入了共同决策程序。2009 年的《里斯本条约》废除了旧的支柱结构，赋予欧盟法律人格，并设立了欧洲理事会常任主席和外交事务高级代表等新的常设职位。
Successive reforms have shifted the institutional balance from a largely intergovernmental model towards greater supranational authority. The ordinary legislative procedure, formerly co-decision, now makes the European Parliament a co-equal legislator with the Council in most policy areas. However, the European Council retains significant agenda-setting power, and unanimity remains in sensitive fields such as taxation, foreign policy and treaty revision. This tension between intergovernmentalism and supranationalism is a recurring theme in EU institutional analysis.
历次改革使制度平衡从一个以政府间模式为主的结构转向更大的超国家权力。普通立法程序（原为共同决策程序）现在使欧洲议会在大多数政策领域与理事会成为平等的共同立法者。然而，欧洲理事会在议程设置方面仍拥有重要权力，并且在税收、外交政策和条约修订等敏感领域仍实行一致通过原则。政府间主义与超国家主义之间的这种张力，是欧盟制度分析中反复出现的主题。
2. The European Commission: Establishment and Executive Powers | 欧盟委员会：建立与行政权力
The European Commission originated as the High Authority of the European Coal and Steel Community in 1951 and became the Commission of the European Communities after the 1965 Merger Treaty. Today it is composed of one Commissioner from each member state, including the President and the High Representative. The Commission President is proposed by the European Council, approved by the European Parliament, and the whole College is subject to a vote of consent by Parliament for a five-year term. Commissioners are required to act independently of national governments, promoting the general interest of the Union.
欧盟委员会起源于 1951 年欧洲煤钢共同体的高级机构，1965 年《合并条约》后成为欧洲共同体委员会。现在它由每个成员国一名委员组成，包括主席和高级代表。委员会主席由欧洲理事会提名，经欧洲议会批准，整个委员会需经欧洲议会同意投票，任期五年。委员须独立于本国政府行事，促进欧盟的整体利益。
The Commission holds several key powers. It has the exclusive right of legislative initiative under the ordinary legislative procedure, meaning that the Council and Parliament normally cannot legislate without a Commission proposal, except in specific cases. It acts as guardian of the treaties by monitoring member states’ compliance and bringing infringement actions before the Court of Justice. The Commission also enforces competition rules, manages the EU budget and represents the Union in international trade negotiations. These functions make the Commission the most visibly supranational institution, although it is politically accountable to the European Parliament, which can dismiss the entire College through a motion of censure.
委员会拥有几项关键权力。在普通立法程序下，它拥有立法提案的专属权利，这意味着理事会和议会通常不能在委员会未提出提案的情况下立法，某些特定情形除外。它作为条约的守护者，监督成员国的合规情况，并向欧洲法院提起违规诉讼。委员会还执行竞争规则、管理欧盟预算，并代表欧盟参与国际贸易谈判。这些职能使委员会成为最明显的超国家机构，尽管它在政治上对欧洲议会负责，议会可以通过不信任动议罢免整个委员会。
3. The Council of the European Union: Legislative Role and Qualified Majority Voting | 欧盟理事会：立法角色与特定多数表决
The Council of the European Union, often called the Council of Ministers, was established by the Treaty of Rome in 1957. It represents the governments of the member states, with ministers attending meetings according to the policy area under discussion, such as agriculture, finance or environment. The Council is not a single fixed body but a configuration of national ministers, supported by the Committee of Permanent Representatives. Its presidency rotates among member states every six months, except for the Foreign Affairs Council, which is chaired by the High Representative.
欧盟理事会，通常称为部长理事会，由 1957 年《罗马条约》设立。它代表成员国政府，各国部长根据所讨论的政策领域出席会议，如农业、财政或环境。理事会不是一个单一的固定机构，而是由各国部长组成的不同配置，并得到常驻代表委员会的支持。其主席国每六个月在成员国之间轮换，但外交事务理事会除外，该理事会由高级代表主持。
The Council shares legislative power with the European Parliament under the ordinary legislative procedure. It also coordinates member states’ economic policies, concludes international agreements on behalf of the EU, and approves the annual budget jointly with Parliament. Voting in the Council has evolved from unanimity to qualified majority voting (QMV). Since the Lisbon Treaty, QMV generally requires a double majority: at least 55% of member states, representing at least 65% of the EU population. This system aims to balance the influence of large and small states while preventing a single powerful state from blocking decisions. Some policy areas, such as taxation and foreign policy, still require unanimity, which gives individual governments a veto.
在普通立法程序下，理事会与欧洲议会共同行使立法权。它还协调成员国的经济政策，代表欧盟缔结国际协定，并与议会共同批准年度预算。理事会的表决方式已从一致通过演变为特定多数表决。自《里斯本条约》以来，特定多数表决通常要求双重多数：至少 55% 的成员国，代表至少 65% 的欧盟人口。该制度旨在平衡大小国家的影响力，同时防止单一强国阻止决定。税收和外交政策等一些政策领域仍需一致通过，这赋予了单个政府否决权。
4. The European Parliament: Democratic Legitimacy and Co-legislative Powers | 欧洲议会：民主合法性与共同立法权
The European Parliament evolved from the Common Assembly of the European Coal and Steel Community, which was initially a consultative body with appointed members. Since 1979, Members of the European Parliament have been directly elected by EU citizens every five years. The Lisbon Treaty strengthened the Parliament’s role, making it a co-legislator on equal footing with the Council in most areas through the ordinary legislative procedure. The current Parliament has 720 members, allocated among member states according to degressive proportionality, with larger states receiving more seats but smaller states receiving more seats per capita.
欧洲议会由欧洲煤钢共同体的共同大会演变而来，最初是一个由任命成员组成的咨询机构。自 1979 年起，欧洲议会议员由欧盟公民每五年直接选举产生。《里斯本条约》加强了议会的作用，使其通过普通立法程序在大多数领域与理事会处于平等地位，成为共同立法者。目前议会有 720 名议员，按照递减比例原则在成员国之间分配席位，大国获得更多席位，而小国的人均席位更多。
The Parliament exercises several important powers. It amends and adopts legislation jointly with the Council, and its consent is required for the EU budget and for most international agreements. It exercises democratic oversight over the Commission by approving the Commission President and the College, by holding hearings with Commissioners, and by having the power to dismiss the Commission through a two-thirds majority motion of censure. The Parliament also elects the European Ombudsman and can set up temporary committees of inquiry. Despite these powers, the Parliament cannot formally initiate legislation, a limitation often criticised by those who argue that the EU suffers from a democratic deficit because the executive is indirectly elected and the only directly elected chamber lacks the right of initiative.
议会行使若干重要权力。它与理事会共同修改和通过立法，欧盟预算和大多数国际协定须经其同意。它对委员会进行民主监督，批准委员会主席和委员会成员，对委员举行听证会，并有权通过三分之二多数的不信任动议罢免委员会。议会还选举欧洲监察员，并可设立临时调查委员会。尽管拥有这些权力，议会不能正式提出立法动议，这一局限性常被批评者用来论证欧盟存在民主赤字，因为执行机构是间接选举产生的，而唯一直接选举产生的议院却缺乏立法提案权。
5. The European Council: Agenda-setting and Political Leadership | 欧洲理事会：议程设置与政治领导
The European Council began informally in 1974 as meetings of heads of state or government to discuss major political issues. It was formalised by the Single European Act in 1986 and became a full EU institution with the Lisbon Treaty. The European Council consists of the heads of state or government of the member states, its own President, and the President of the Commission. The High Representative for Foreign Affairs and Security Policy also participates in its work. Its meetings, usually held at least four times a year, provide the Union with strategic direction and political impetus.
欧洲理事会始于 1974 年非正式的国家元首或政府首脑会议，用于讨论重大政治问题。1986 年《单一欧洲法案》将其正式化，《里斯本条约》使其成为欧盟的正式机构。欧洲理事会由成员国国家元首或政府首脑、其自身主席以及委员会主席组成。外交与安全政策高级代表也参与其工作。其会议通常每年至少举行四次，为欧盟提供战略方向和政治动力。
The European Council does not exercise legislative functions. Instead, it defines the general political priorities of the EU, adopts conclusions that guide the work of other institutions, and attempts to resolve sensitive issues that cannot be settled at ministerial level. It also plays a key role in appointment procedures, such as proposing the Commission President, appointing the High Representative and the President of the European Council, and deciding on treaty changes. Decisions are usually taken by consensus, which reflects the intergovernmental character of the European Council. The creation of a permanent President by the Lisbon Treaty was intended to provide greater continuity and external representation, but the European Council remains a body of national leaders whose decisions often depend on domestic political considerations.
欧洲理事会不行使立法职能。它确定欧盟的总体政治优先事项，通过指导其他机构工作的结论，并努力解决部长级无法处理的敏感问题。它还在任命程序中发挥关键作用，例如提名委员会主席、任命高级代表和欧洲理事会主席，以及决定条约修改。决定通常以协商一致方式作出，这反映了欧洲理事会的政府间性质。《里斯本条约》设立常任主席旨在提供更大的连续性和对外代表性，但欧洲理事会仍是一个由各国领导人组成的机构，其决定往往取决于国内政治考虑。
6. The Court of Justice of the European Union: Judicial Review and Legal Integration | 欧盟法院：司法审查与法律一体化
The Court of Justice of the European Union was established in 1952 as the Court of Justice of the European Coal and Steel Community, making it one of the oldest EU institutions. It is based in Luxembourg and consists of two courts: the Court of Justice and the General Court. The Court of Justice has one judge from each member state and is assisted by Advocates General who deliver reasoned opinions on cases. The General Court, created in 1989, handles actions brought by individuals and companies, while the Court of Justice focuses on preliminary rulings and actions involving member states or institutions.
欧盟法院于 1952 年作为欧洲煤钢共同体的法院而成立，是欧盟最古老的机构之一。它设在卢森堡，由两个法院组成：法院和普通法院。法院有每个成员国一名法官，并由提出案件合理意见的总顾问协助。普通法院成立于 1989 年，处理个人和公司提起的诉讼，而法院则侧重于初步裁决以及涉及成员国或机构的诉讼。
The Court of Justice ensures the uniform interpretation and application of EU law. Its most significant power is the preliminary ruling procedure under Article 267 of the Treaty on the Functioning of the EU, which allows national courts to refer questions of EU law to Luxembourg and thereby ensures consistency across member states. The Court also hears infringement actions brought by the Commission against member states for failing to fulfil treaty obligations, and it reviews the legality of EU acts through annulment actions. Through landmark rulings such as Van Gend en Loos and Costa v ENEL, the Court developed the doctrines of direct effect and supremacy of EU law over conflicting national law, transforming the EU from a treaty-based international organisation into a distinct legal order. This judicial activism has been praised for strengthening integration but criticised for extending EU competences beyond what member states originally intended.
法院确保欧盟法律的统一解释和适用。其最重要的权力是《欧盟运行条约》第 267 条规定的初步裁决程序，该程序允许各国法院就欧盟法律问题向卢森堡法院提出咨询，从而确保成员国之间的一致性。法院还受理委员会对成员国未履行条约义务提起的违规诉讼，并通过撤销诉讼审查欧盟行为的合法性。通过 Van Gend en Loos 和 Costa v ENEL 等里程碑式的裁决，法院发展了欧盟法律直接效力和优先于相抵触的国内法的原则，将欧盟从一个以条约为基础的国际组织转变为一个独特的法律秩序。这种司法能动主义因加强一体化而受到赞扬，但也因将欧盟权限扩大到超出成员国最初意图而受到批评。
7. The European Central Bank: Monetary Authority and Eurozone Governance | 欧洲中央银行：货币当局与欧元区治理
The European Central Bank was established in 1998 by the Maastricht Treaty and became operational in 1999 when the euro was introduced as a virtual currency. Its headquarters are in Frankfurt, Germany. The ECB is the central bank for the euro area, which currently comprises twenty member states. Together with the national central banks of all EU member states, it forms the European System of Central Banks, and with the euro area national central banks it forms the Eurosystem. The ECB is governed by the Governing Council, which consists of the six members of the Executive Board and the governors of the national central banks of the euro area.
欧洲中央银行由《马斯特里赫特条约》于 1998 年设立，并于 1999 年欧元作为虚拟货币推出时开始运作。其总部设在德国法兰克福。欧洲央行是欧元区的中央银行，欧元区目前包括二十个成员国。它与所有欧盟成员国的国家中央银行共同组成欧洲中央银行体系，并与欧元区国家中央银行共同组成欧元体系。欧洲央行由管理委员会管理，该委员会由执行委员会六名成员和欧元区各国中央银行行长组成。
The ECB has the exclusive power to set monetary policy for the euro area, with price stability as its primary objective. It sets key interest rates, conducts foreign exchange operations, holds and manages the official foreign reserves of the euro area, and authorises the issuance of euro banknotes. Since the euro area debt crisis, the ECB has also taken on a significant role in banking supervision through the Single Supervisory Mechanism, directly supervising the largest banks. Its independence is enshrined in the treaties, and neither the ECB nor national central banks may seek or take instructions from EU institutions, member state governments or any other body. This independence has been essential for credibility in fighting inflation, but it has also raised questions about democratic accountability, as the ECB wields immense power with limited direct electoral oversight.
欧洲央行拥有制定欧元区货币政策的专属权力，其主要目标为价格稳定。它设定关键利率、进行外汇操作、持有和管理欧元区的官方外汇储备，并授权发行欧元纸币。自欧元区债务危机以来，欧洲央行还通过单一监管机制在银行监管方面发挥重要作用，直接监管大型银行。其独立性写入条约，欧洲央行和各国家中央银行均不得寻求或接受欧盟机构、成员国政府或任何其他机构的指示。这种独立性对于控制通胀的可信度至关重要，但也引发了民主问责方面的质疑，因为欧洲央行拥有巨大权力，而直接的选举监督却有限。
8. Other Institutions and Advisory Bodies | 其他机构与咨询机构
In addition to the main institutions, the EU has several other bodies that contribute to its governance. The European Court of Auditors, established in 1975 and based in Luxembourg, audits the EU’s finances and produces annual reports on the implementation of the budget. It is composed of one member from each member state and aims to improve financial management and accountability. The Court of Auditors does not have judicial powers, but its findings can lead to political pressure and reforms.
除了主要机构之外，欧盟还有其他一些有助于治理的机构。欧洲审计院成立于 1975 年，设在卢森堡，负责审计欧盟财政并就预算执行情况发布年度报告。它由每个成员国一名成员组成，旨在改善财务管理和问责。审计院不具有司法权，但其审计结果可以带来政治压力并推动改革。
Two advisory bodies, the European Economic and Social Committee and the European Committee of the Regions, represent civil society and local and regional authorities respectively. Although their opinions are non-binding, they must be consulted in certain policy areas, giving organised interests and subnational governments a formal voice in the legislative process. The European Investment Bank, established by the Treaty of Rome, provides long-term financing for projects that support EU objectives.
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