📚 The Main Characteristics of US Federalism | 美国联邦制的主要特征
Federalism in the United States is a constitutional system in which governing authority is divided between the national government in Washington, D.C. and the governments of the fifty states. This division is not merely administrative; it is a central structural feature of the US Constitution, shaping policy-making, party politics, judicial interpretation and the everyday lives of citizens. Understanding the main characteristics of US federalism is therefore essential for any analysis of American government.
美国联邦制是一种宪法制度，治理权力在华盛顿特区的全国政府和五十个州的州政府之间进行划分。这种划分不仅仅是行政安排，更是美国宪法的核心结构特征，影响着政策制定、政党政治、司法解释和公民的日常生活。因此，理解美国联邦制的主要特征对于分析美国政府至关重要。
1. Constitutional Division of Powers | 宪法的权力划分
The US Constitution establishes federalism by granting certain powers to the federal government while leaving others to the states. This division is set out in Article I, Section 8, the Tenth Amendment, and various other provisions. Unlike a unitary system, the national government cannot simply override state governments on all matters; unlike a confederation, the states are not fully sovereign. American federalism is therefore a middle way between centralisation and fragmentation.
美国宪法通过将某些权力授予联邦政府，同时将其他权力留给各州，确立了联邦制。这一划分规定在宪法第一条第八款、第十修正案以及其他条款中。与单一制不同，全国政府不能在所有事务上简单地凌驾于州政府之上；与邦联制不同，各州也不是完全主权实体。因此，美国联邦制是介于中央集权与权力分散之间的一条中间道路。
2. Enumerated, Reserved and Concurrent Powers | 列举权力、保留权力与共同权力
The powers of the federal government are enumerated in the Constitution. These include the power to coin money, regulate interstate and foreign commerce, declare war, maintain armed forces, and conduct foreign policy. Powers not delegated to the federal government are reserved to the states under the Tenth Amendment, such as policing, education, public health and local government. Some powers are concurrent, meaning both levels of government may exercise them, for example taxation and building roads.
联邦政府的权力在宪法中列举，包括铸造货币、管理州际和对外贸易、宣战、维持武装力量以及开展外交政策。根据第十修正案，未授予联邦政府的权力保留给各州，例如治安、教育、公共卫生和地方政府。有些权力是共同权力，即两级政府都可以行使，例如征税和修建道路。
3. The Supremacy Clause | 至高条款
Article VI of the Constitution contains the Supremacy Clause, which declares that the Constitution, federal laws made under it, and treaties are the supreme law of the land. This means that when a state law conflicts with a valid federal law, the federal law prevails. The Supremacy Clause gives the national government legal superiority in its areas of constitutional authority, but it does not remove all state power.
宪法第六条包含至高条款，宣布宪法、依据宪法制定的联邦法律以及条约是国家的最高法律。这意味着当州法律与有效的联邦法律冲突时，联邦法律优先。至高条款赋予全国政府在其宪法权限范围内的法律优先地位，但并未取消所有州权力。
4. The Tenth Amendment and Reserved Powers | 第十修正案与保留权力
The Tenth Amendment states that powers not delegated to the United States by the Constitution, nor prohibited by it to the states, are reserved to the states respectively, or to the people. This amendment is often cited by states’ rights advocates as a limit on federal power. However, its practical impact has varied, because the Supreme Court has interpreted the enumerated powers, especially the commerce clause, very broadly at times.
第十修正案规定，宪法未授予合众国、也未禁止各州行使的权力，保留给各州或人民。该修正案常被州权倡导者援引为对联邦权力的限制。然而，它的实际影响并不固定，因为最高法院有时对列举权力，特别是商业条款，作出非常宽泛的解释。
5. Dual Sovereignty and Two Levels of Government | 双重主权与两级政府
American citizens live under two levels of government simultaneously: the federal government and their state government. Each level has its own constitution, legislature, executive and court system. This dual sovereignty means that individuals are subject to two sets of laws, pay two sets of taxes, and can appeal to two court systems. It also creates multiple points of access for political participation and policy influence.
美国公民同时生活在两级政府之下：联邦政府和州政府。每一级都有自己的宪法、立法机关、行政机关和法院系统。这种双重主权意味着个人受两套法律约束、缴纳两套税收，并可以使用两个法院系统。它也创造了政治参与和政策影响的多个入口。
6. Fiscal Federalism: Grants and Mandates | 财政联邦制：拨款与指令
A major characteristic of modern US federalism is fiscal federalism, where the federal government uses money to influence state policy. Categorical grants provide funds for specific purposes with strict conditions, while block grants give states more flexibility. The federal government can also impose mandates requiring states to follow certain policies, sometimes without full funding. These tools allow Washington to shape policy in areas such as education, transportation and healthcare that are formally state responsibilities.
现代美国联邦制的一大特征是财政联邦制，即联邦政府利用资金影响州政策。分类拨款为特定目的提供资金并附带严格条件，而整笔拨款给予各州更大的灵活性。联邦政府还可以施加指令，要求各州遵循某些政策，有时并不提供全部资金。这些工具使华盛顿能够在教育、交通和医疗等正式属于州责任的领域塑造政策。
7. The Role of the Supreme Court | 最高法院的角色
The Supreme Court acts as the key umpire of American federalism. Through judicial review, it decides disputes between the federal government and the states over the boundaries of their powers. Landmark rulings have both expanded and restricted federal authority, such as McCulloch v. Maryland (1819), Gibbons v. Ogden (1824), United States v. Lopez (1995) and National Federation of Independent Business v. Sebelius (2012). The Court’s interpretation of the commerce clause and the necessary and proper clause is central to the balance of federalism.
最高法院是美国联邦制的关键仲裁者。通过司法审查，它就联邦政府与各州之间关于权力边界的争议作出裁决。具有里程碑意义的判决既有扩大也有限制联邦权力的，例如麦卡洛克诉马里兰州案、吉本斯诉奥格登案、美国诉洛佩兹案以及全国独立企业联合会诉西贝利厄斯案。法院对商业条款和必要与适当条款的解释是联邦制平衡的核心。
8. From Dual to Cooperative Federalism | 从双重联邦制到合作联邦制
Scholars often describe the historical evolution of US federalism as moving from dual federalism to cooperative federalism. Under dual federalism, often called ‘layer cake federalism’, the federal and state governments operated in separate, clearly defined spheres. From the New Deal era onwards, cooperative federalism, or ‘marble cake federalism’, became dominant, with federal and state governments sharing responsibilities and funding across many policy areas.
学者们通常将美国联邦制的历史演变描述为从双重联邦制向合作联邦制过渡。在双重联邦制下，通常称为“分层蛋糕联邦制”，联邦和州政府在各自明确界定的领域内运作。自新政时期以来，合作联邦制（或称“大理石蛋糕联邦制”）占据主导地位，联邦和州政府在许多政策领域共同承担责任和资金。
9. New Federalism and Devolution | 新联邦制与权力下放
From the 1970s, especially under Presidents Nixon and Reagan, there was a push for New Federalism, aiming to return power and responsibility to the states. This often took the form of block grants and reduced federal regulations. More recently, devolution has continued in areas such as welfare reform, education standards and drug policy, though federal influence remains strong through funding conditions and national legislation.
自 20 世纪 70 年代以来，特别是在尼克松和里根总统时期，出现了推行新联邦制的努力，旨在将权力和责任归还给各州。这通常采取整笔拨款和减少联邦监管的形式。近年来，权力下放在福利改革、教育标准和毒品政策等领域继续进行，尽管联邦通过拨款条件和国家立法仍然保持着强大影响。
10. Advantages and Disadvantages of Federalism | 联邦制的优点与缺点
Federalism has several advantages. It allows states to act as ‘laboratories of democracy’, testing different policies before national adoption. It brings government closer to local preferences, encourages participation and limits the concentration of power. However, federalism can also produce inequalities between states, a lack of national uniformity on important issues, duplication of services and confusion over accountability. It can allow local majorities to infringe minority rights if national protections are weak.
联邦制有若干优点。它允许各州充当“民主实验室”，在国家采纳之前试验不同政策。它使政府更贴近地方偏好，鼓励参与并限制权力集中。然而，联邦制也可能导致各州之间的不平等、在重要问题上缺乏全国统一性、服务重复以及问责不清。如果全国性保护薄弱，地方多数派可能侵犯少数群体权利。
11. Contemporary Federalism Debates | 当代联邦制争论
Contemporary debates over federalism in the US often focus on issues such as marijuana legalisation, immigration enforcement, healthcare reform, voting rights and environmental regulation. For example, some states have legalised recreational or medical marijuana even though federal law still classifies it as illegal. Similarly, states and the federal government have clashed over sanctuary cities and the scope of the Affordable Care Act. These conflicts show that the boundaries of federalism remain politically contested and judicially significant.
当代美国联邦制的争论往往集中在诸如大麻合法化、移民执法、医疗改革、投票权和环境监管等问题上。例如，一些州已经将娱乐或医用大麻合法化，尽管联邦法律仍将其归类为非法。同样，各州与联邦政府在庇护城市和平价医疗法案的范围上也发生了冲突。这些冲突表明，联邦制的边界在政治上仍然存在争议，并具有重要的司法意义。
12. Federalism and Democracy | 联邦制与民主
Finally, US federalism is deeply connected to democratic theory. It disperses power across multiple centres, making it harder for any single faction to dominate. It also gives citizens numerous points of access to political influence, from local councils to state legislatures to Congress. At the same time, the complexity of multiple governments can reduce transparency and make it difficult for voters to know which level of government is responsible for a particular policy outcome.
最后，美国联邦制与民主理论紧密相连。它将权力分散到多个中心，使任何单一派别都更难占据主导地位。它还为公民提供了众多影响政治的入口，从地方议会到州立法机构再到国会。同时，多级政府的复杂性可能降低透明度，使选民难以知道哪一级政府应对某项政策结果负责。
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