📚 Interpretations and debates around the US Constitution and federalism | 围绕美国宪法与联邦制的解读与争议
The US Constitution is the oldest written national constitution still in force, yet its meaning and the federal system it created remain deeply contested. Competing interpretations – from originalism to the idea of a living constitution – shape judicial rulings, political campaigns, and the daily governance of the United States. Alongside these interpretive battles, the nature of federalism has evolved, sparking ongoing debates about the balance of power between the national government and the states. This article examines the key schools of thought, landmark constitutional clauses, and the shifting dynamics of American federalism that continue to define US politics.
美国宪法是世界上仍在使用的最古老的成文国家宪法，但它的含义及其建立的联邦体制始终引发激烈争议。从原旨主义到活宪法理念，相互竞争的解读方式影响着司法裁决、政治竞选和美国的日常治理。与这些解释性论争相伴的是，联邦制的性质也在不断演变，催生了围绕国家政府与各州之间权力平衡的持续辩论。本文检视主要的思想流派、关键宪法条款以及仍在塑造美国政治的联邦制动态变迁。
1. Originalism vs. Living Constitution | 原旨主义与活宪法主义
Originalism holds that the Constitution should be interpreted according to the original meaning or intent of its framers at the time of ratification. Proponents argue that this approach constrains judicial discretion, preserves democratic legitimacy, and prevents unelected judges from imposing modern values. Critics contend that originalism is often impossible to apply in practice, as historical records are incomplete and the framers' intentions were themselves contested. In response, many originalists have shifted to 'original public meaning', focusing on how the text would have been understood by ordinary citizens at the time.
原旨主义主张，宪法应根据制宪者在批准时的原初含义或意图来解释。支持者认为，这一路径可以限制司法裁量，维护民主正当性，并防止非民选法官强加现代价值观。批评者则指出，原旨主义在实践中往往难以适用，因为历史记录不完整，制宪者自身的意图也存在分歧。作为回应，许多原旨主义者转向“原初公共含义”，关注当时普通公民会如何理解宪法文本。
By contrast, the living constitution theory posits that the Constitution is a dynamic document that must be read in light of evolving societal standards and contemporary needs. Advocates point to the amendment process and broad constitutional language as evidence that the framers intended the document to adapt. This interpretive method underpinned decisions on rights ranging from privacy to same-sex marriage. Critics argue, however, that living constitutionalism gives judges excessive power to reshape the law without public consent, risking government by judiciary rather than by the people.
相比之下，活宪法理论认为，宪法是一部动态的文献，必须根据不断发展的社会标准和当代需求来解读。倡导者以修宪程序和泛泛的宪法用语为证据，指出制宪者本就希望文献能够与时俱进。这种解释方法支撑了从隐私权到同性婚姻等一系列权利的裁决。但批评者认为，活宪法主义赋予法官过多的权力，未经公众同意便重塑法律，有可能导致司法治国而非民治。
2. The role of the judiciary: strict vs. loose constructionism | 司法机构的角色：严格解释与宽松解释
Debates around judicial interpretation also centre on strict constructionism versus loose constructionism. Strict constructionists insist the judiciary should apply the Constitution precisely as written, deferring to the literal text and leaving law-making to elected branches. Loose constructionists, however, contend that the Founders wrote the Constitution in broad language precisely so it could accommodate unforeseen circumstances, empowering judges to infer principles from the structure and spirit of the document.
围绕司法解释的辩论也集中在严格解释与宽松解释的对立上。严格解释者坚持，司法机关应完全按字面意思适用宪法，将字面文本置于首位，将立法权留给民选分支。而宽松解释者则认为，建国者之所以使用宽泛的语言来撰写宪法，正是为了使其能够适应未曾预见的局势，从而赋予法官根据文献结构与精神推导出原则的权力。
Landmark Supreme Court decisions such as McCulloch v. Maryland (1819) illustrate the tension. Chief Justice Marshall adopted a loose constructionist view of the Necessary and Proper Clause, dramatically expanding federal authority. In modern times, debates over the interpretation of the Second Amendment and the scope of the right to bear arms expose the same rift, with some justices focusing on the original context of militias and others prioritising the plain text.
麦卡洛克诉马里兰州案（1819）等里程碑式的最高法院判决凸显了这一紧张关系。首席大法官马歇尔对“必要与适当条款”采取了宽松解释的立场，极大地扩展了联邦权力。在当代，围绕第二修正案的解释和持枪权范围的辩论同样暴露出这一裂痕，有的法官聚焦于民兵制度的原始语境，另一些法官则优先考虑字面文本。
3. The Commerce Clause and federal power | 商业条款与联邦权力
The Commerce Clause (Article I, Section 8, Clause 3) grants Congress the power 'To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes'. Interpretations of this clause have been a primary engine of federal expansion. In the early republic, the Supreme Court gave the clause a broad reading, yet the balance shifted during the Lochner era, when the Court struck down many economic regulations. After the New Deal, Wickard v. Filburn (1942) marked a high-water mark: the Court held that even wheat grown for personal consumption could be regulated because it affected interstate commerce in the aggregate.
商业条款（第一条第八款第三项）授予国会“管理与外国的、各州之间的以及与印第安部落的商业”的权力。对该条款的解释一直是联邦权力扩张的主要引擎。共和国早期，最高法院对条款作了宽泛解读，但在洛克纳时代，平衡发生了转移，法院推翻了许多经济管制法规。新政之后，威卡德诉菲尔本案（1942）标志着联邦权力达到顶峰：法院裁定，即使是自用的种植小麦也可以被管制，因为它总体上影响了州际商业。
More recently, the Court has imposed limits. In United States v. Lopez (1995), the Rehnquist Court struck down the Gun-Free School Zones Act, ruling that carrying a firearm in a school zone did not substantially affect interstate commerce. This decision signalled a renewed willingness to police the boundaries of federal power, though the Commerce Clause remains the constitutional basis for a vast array of federal legislation, including the Civil Rights Act of 1964 and environmental statutes.
晚近，法院则施加了限制。在合众国诉洛佩斯案（1995）中，伦奎斯特法院推翻了《校区禁枪法案》，裁定在校区内携带枪支并未实质影响州际商业。这一判决标志着法院重新愿意监管联邦权力的边界，尽管商业条款仍是大量联邦立法——包括1964年《民权法案》和多项环境法规——的宪法根据。
4. The Necessary and Proper Clause debate | 必要与适当条款的辩论
The Necessary and Proper Clause (also known as the Elastic Clause) gives Congress the power 'To make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers'. Supporters of broad federal authority interpret this clause as granting implied powers that extend beyond those explicitly listed in Article I, arguing that the federal government must have the means to execute its enumerated responsibilities effectively. Opponents assert that this reading effectively erases the doctrine of enumerated powers, transforming the national government into one of general jurisdiction.
必要与适当条款（又称弹性条款）授予国会“制定为执行上述权力所必需且适当的一切法律”的权力。支持广泛联邦权力的人士将该条款解释为授予暗含权力，这些权力超越了第一条明确列举的范围，他们主张联邦政府必须拥有有效执行其列举职责的手段。反对者则断言，这种解读实际上抹杀了列举权力原则，将国家政府转化为一个拥有普遍管辖权的政府。
The debate was central to the establishment of the First Bank of the United States and the famous clash between Hamilton and Jefferson. Hamilton's broad view eventually prevailed in McCulloch v. Maryland, where the Court declared that as long as the end was legitimate and the means were not prohibited by the Constitution, any appropriate method could be employed. Modern applications include controversies over federal mandates and disaster response, where questions of what is 'proper' continue to divide Congress and the courts.
这一辩论对于美国第一银行的设立以及汉密尔顿与杰斐逊之间著名的冲突至关重要。汉密尔顿的宽泛观点最终在麦卡洛克诉马里兰州案中占了上风，法院宣布，只要目的正当，手段未被宪法禁止，任何适当的方法皆可采用。现代应用包括围绕联邦指令和灾害应对的争议，在此类议题上，何为“适当”的问题仍使国会与法院分裂。
5. Federalism: dual federalism vs. cooperative federalism | 双重联邦制与合作联邦制
Dual federalism envisions the national and state governments as sovereign in their own distinct spheres, operating largely independently of one another. This interpretation, often compared to a layer cake, dominated American jurisprudence from the early republic until the New Deal. Under dual federalism, the Tenth Amendment is treated as a strong barrier protecting state authority from federal encroachment, and the enumerated powers of Congress are read narrowly.
双重联邦制将国家政府与州政府视作各自独立领域内的主权者，彼此在很大程度上互不干涉。这一常被类比为“千层蛋糕”的解释从共和国早期直至新政时期主导了美国的司法裁判。在双重联邦制下，第十修正案被视为保护州权免受联邦侵夺的坚强壁垒，国会的列举权力也被作狭义解读。
Cooperative federalism, or marble-cake federalism, emerged prominently during the New Deal and the Great Society era, recognising that many public problems require collaboration rather than rigid separation. Under this model, the federal government provides funds and sets broad standards, while states administer programmes and adapt policies to local conditions. This has led to a vast system of federal grants-in-aid, but critics charge that cooperative federalism all too often becomes coercive, with Washington using spending power to dictate policy to the states.
合作联邦制，或称“大理石蛋糕式联邦制”，在新政和伟大社会时期明显兴起，承认许多公共问题需要合作而非僵硬的分离。在这一模式下，联邦政府提供资金并设定宽泛标准，各州则管理项目并根据地方条件调整政策。这衍生出一个庞大的联邦拨款资助体系，但批评者指责合作联邦制往往变为强制性联邦制，华盛顿利用支出权力向各州发号施令。
6. The 10th Amendment and states' rights | 第十修正案与州权
The Tenth Amendment declares that 'The 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 the textual foundation of states' rights arguments, advanced by those who believe the federal government has overreached. In the antebellum period, it was invoked to defend slavery; in the civil rights era, it was used to resist desegregation.
第十修正案宣称“宪法未授予合众国，也未禁止各州行使的权力，分别由各州或由人民保留。”该修正案是州权主张的文本依据，由那些认为联邦政府侵越权力的人士所推进。在南北战争前，它被用来为奴隶制辩护；在民权时代，它被用来抵制废除种族隔离。
In modern constitutional law, the Supreme Court has used the Tenth Amendment to strike down federal laws that commandeer state legislatures or executive officials. In Printz v. United States (1997) and New York v. United States (1992), the Court held that Congress cannot compel states to enact or administer federal regulatory programmes. These decisions reaffirm a core anti-commandeering principle, but the reach of the Tenth Amendment remains limited by the supremacy of federal law under the Supremacy Clause.
在现代宪法法律中，最高法院运用第十修正案推翻了那些强占州立法机关或行政官员的联邦法律。在普林茨诉合众国案（1997）和纽约诉合众国案（1992）中，法院裁定国会不得强迫各州制定或执行联邦管制计划。这些判决重申了核心的反强制原则，但第十修正案的效力仍受到最高条款下联邦法律至上性的制约。
7. The Supremacy Clause and national supremacy | 最高条款与国家至上
The Supremacy Clause (Article VI, Clause 2) establishes that the Constitution, federal laws made pursuant to it, and treaties constitute the 'supreme Law of the Land'. This clause has been instrumental in building a strong national government, ensuring that legitimate federal actions override conflicting state laws. The Founders inserted this provision to avoid the fragmentation that had paralysed the Articles of Confederation.
最高条款（第六条第二款）规定，宪法、依据宪法制定的联邦法律以及条约构成“国家的最高法律”。该条款对于建设一个强大的国家政府至关重要，确保正当的联邦行为压倒与之冲突的州法律。建国者写入这一规定，正是为了避免曾使《邦联条例》陷入瘫痪的分裂局面。
Debates over the Supremacy Clause often arise in areas such as immigration, controlled substances, and environmental regulation. While federal preemption can create uniform national standards, opponents argue it stifles state innovation and undermines local democratic accountability. The tension is especially evident in the context of sanctuary cities, where state and local governments have declined to assist federal immigration enforcement, sparking constitutional standoffs and courtroom battles.
围绕最高条款的辩论经常出现在移民、管制药物和环境监管等领域。尽管联邦优先可以创立全国统一标准，但反对者认为它扼杀了州的创新并削弱了地方民主问责。这一紧张关系在庇护城市的背景下尤为明显，各州和地方政府拒绝协助联邦移民执法，引发了宪法僵局和法庭争夺。
8. Fiscal federalism: grants and mandates | 财政联邦制：拨款与指令
Fiscal federalism refers to the transfer of funds from the federal government to state and local governments, along with the conditions attached to those funds. Categorical grants, which come with strict guidelines, allow Washington to pursue targeted national goals. Block grants offer states greater flexibility, resonating with those who favour decentralised control. Over time, the share of categorical grants has generally increased, tightening federal influence over state policy.
财政联邦制指的是联邦政府向州和地方政府转移资金以及附加的资金使用条件。分类拨款附有严格指导方针，使华盛顿能够追求特定的全国目标。整笔拨款给予各州更大的灵活性，与偏好分权控制的人士产生共鸣。随着时间的推移，分类拨款的比例总体上增加了，从而加强了联邦对州政策的影响力。
Unfunded mandates, where the federal government requires states to perform certain actions without providing sufficient funding, remain a flashpoint. The Unfunded Mandates Reform Act of 1995 sought to limit this practice, but by requiring new procedural hurdles rather than an outright ban, its effectiveness has been contested. Debates around mandatory health insurance expansions and environmental compliance frequently reignite controversy over fiscal federalism, with states asserting that mandates blur the lines of accountability and strain their budgets.
不提供足额资金的联邦指令——即联邦政府要求各州采取某些行动却不提供充足资金——仍是一个引爆点。1995年的《不提供资金指令改革法》试图限制这一做法，但由于只是增设程序障碍而非彻底禁止，其效力受到质疑。围绕强制性医保扩展和环境合规的辩论屡屡重燃财政联邦制的争议，各州坚称这些指令模糊了问责界限并加重了预算压力。
9. The impact of the Supreme Court on federalism | 最高法院对联邦制的影响
The Supreme Court acts as the ultimate referee in federalism disputes, and its composition heavily influences the balance of power. Under Chief Justice John Marshall, the Court consistently supported a broad reading of federal authority, as seen in McCulloch and Gibbons v. Ogden (1824). During the late nineteenth and early twentieth centuries, the Court was more protective of state autonomy, striking down child labour laws and minimum wage regulations.
最高法院是联邦制争议的最终裁判者，其人员构成深刻影响着权力平衡。在首席大法官约翰·马歇尔的领导下，法院一贯支持对联邦权威的宽泛解读，麦卡洛克案和吉本斯诉奥格登案（1824）即是明证。而在十九世纪末二十世纪初，法院更多地保护州自治权，推翻了童工法和最低工资条例。
After 1937, the Court switched course and endorsed the New Deal, giving Congress wide latitude under the Commerce Clause. In the Rehnquist Court era, a so-called 'federalism revolution' produced rulings that re-emphasised limits on federal power, such as Lopez and Morrison. The Roberts Court has offered a mixed record: it upheld the individual mandate of the Affordable Care Act as a tax but also struck down the Voting Rights Act's coverage formula, reasserting the principle of equal state sovereignty.
1937年之后，法院转变路线，认可新政，在商业条款下给予国会很大的回旋余地。在伦奎斯特法院时期，一场所谓“联邦制革命”产出了诸如洛佩斯案和莫里森案等重新强调联邦权力界限的判决。罗伯茨法院则呈现出混合记录：既把平价医疗法案的个人强制投保作为税收予以维持，又推翻了投票权法的覆盖公式，重申各州主权平等的原则。
10. Contemporary debates: sanctuary cities and marijuana legalisation | 当代争议：庇护城市与大麻合法化
Sanctuary cities highlight the clash between federal immigration enforcement and local autonomy. These jurisdictions limit cooperation with Immigration and Customs Enforcement, citing public safety and community trust. The Trump administration attempted to withhold federal funding from such cities, but courts struck down several of these efforts on federalism and spending clause grounds, reaffirming that conditional funding must be unambiguous and not coercive.
庇护城市凸显了联邦移民执法与地方自治之间的冲突。这些辖区以公共安全和社区信任为由，限制配合移民与海关执法局。特朗普政府曾试图扣留这些城市的联邦资金，但法院基于联邦制和支出条款的理由推翻了其中部分举措，重申附条件资助必须明确且不得具有强制性。
Marijuana legalisation presents a direct challenge to the federal Controlled Substances Act, under which cannabis remains illegal. States such as Colorado and California have nevertheless built extensive regulatory systems for recreational or medical marijuana. The federal response has oscillated between non-enforcement memoranda and threats of prosecution, creating a grey zone that tests the true extent of state sovereignty. This ongoing tension invites both originalist critiques of congressional overreach and living constitutionalist arguments about evolving norms.
大麻合法化对联邦《管制药物法》构成直接挑战，该法之下大麻仍然非法。然而，科罗拉多和加利福尼亚等州已建立起广泛的娱乐或医用大麻监管体系。联邦的回应在不起诉备忘录与起诉威胁之间摇摆不定，形成了一片灰色地带，检验着州主权的真正限度。这种持续紧张既招致原旨主义者对国会越权的批评，也引发活宪法主义者关于规范演变的论证。
11. The Affordable Care Act and federalism | 平价医疗法案与联邦制
The passage of the Affordable Care Act (ACA) in 2010 triggered a seismic federalism debate. The individual mandate, which required most Americans to obtain health insurance or pay a penalty, was challenged as exceeding congressional power. In NFIB v. Sebelius (2012), the Supreme Court upheld the mandate as a valid exercise of the taxing power, but a majority also found it could not be justified under the Commerce Clause. This nuanced ruling demonstrated the Court's continued willingness to police the limits of federal authority while preserving a major social programme.
2010年《平价医疗法案》的通过引发了一场重大的联邦制辩论。强制个人投保条款要求大多数美国人必须购买医保或支付罚款，被质疑超越了国会权力。在“全国独立企业联合会诉西贝利厄斯案”（2012）中，最高法院将其作为征税权的有效行使加以维持，但多数大法官也认为该条款无法依据商业条款证成。这一精细的裁决显示了法院既愿意监管联邦权力的边界，又保留一项重大社会计划的平衡手法。
The ACA's Medicaid expansion presented a different federalism question: whether Congress could threaten to withdraw all existing Medicaid funds from states that refused to expand eligibility. The Court held that this threat was unconstitutionally coercive, rendering the expansion effectively optional for states. This outcome reinforced the anti-coercion doctrine but also created a patchwork of state-level health policies, reigniting long-standing debates over equity and uniformity in the federal system.
ACA的医疗补助扩大则提出了另一个联邦制问题：国会是否可以威胁撤回拒绝扩大资格州的全部现有医疗补助资金。法院裁定这一威胁构成违宪的强制，从而使扩大实际上成为各州的选择。这一结果强化了反强制原则，但也造成了各州医保政策参差不齐的格局，重新点燃了联邦制中长期存在的关于公平与统一性的辩论。
12. Overall interpretations: balance of power | 总体解读：权力平衡
The enduring debates around the US Constitution and federalism are not merely academic; they directly shape the rights and responsibilities of citizens. Competing interpretations reflect deeper philosophical disagreements about democracy, liberty, and the proper role of government. Whether one favours originalism or a living constitution, dual federalism or cooperative federalism, the arguments each generation rehearses are fundamentally about how power should be distributed and restrained in a diverse, continental republic.
围绕美国宪法与联邦制的持久辩论并非仅仅是学术讨论，它们直接塑造着公民的权利与责任。相互竞争的解释反映出关于民主、自由以及政府恰当角色的深层哲学分歧。无论人们倾向原旨主义还是活宪法，倾向双重联邦制还是合作联邦制，每一代人反复进行的论证归根结底都关乎在一个多元的大陆共和国中，权力应如何分配与约束。
Students of US government and politics must engage with these interpretive frameworks to understand not only landmark court cases but also contemporary political struggles. The Constitution's endurance rests precisely on its capacity to accommodate passionate, disciplined debate over its meaning, ensuring that federalism remains a living laboratory of democracy rather than a rigid set of commands.
学习美国政府与政治的学生必须掌握这些解释框架，才能不仅理解里程碑式的法院判例，也能洞察当代政治抗争。宪法的生命力恰恰在于它能够容纳对其含义的充满激情而又严守法理的辩论，从而确保联邦制始终是民主的活的实验室，而非一套僵硬的命令。
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