📚 The Nature of the Federal System of Government | 联邦制政府体系的本质
Federalism is a core concept in the study of US government and politics, and it is central to the Edexcel A-Level Politics specification. It describes the division of sovereignty between a national government and regional governments, each with its own sphere of constitutional authority. Understanding federalism requires examining how power is allocated, how conflicts are resolved, and how the balance between national and state authority has shifted over time.
联邦制是美国政府与政治研究中的核心概念，也是 Edexcel A-Level 政治大纲的中心内容。它描述了国家政府与地区政府之间主权的划分，每一级政府在各自的宪法权限范围内行使权力。理解联邦制需要考察权力如何分配、冲突如何解决，以及国家与州权力之间的平衡如何随时间变化。
1. Defining Federalism | 联邦制的定义
Federalism is a system of government in which sovereignty is constitutionally divided between a central or federal government and regional governments such as states or provinces. Each level of government has powers that the other cannot unilaterally abolish, creating a system of shared and separate authority. This is different from a unitary system, where any regional powers are granted by the centre and can be removed by the centre.
联邦制是一种政府体制，主权由宪法在中央或联邦政府与州或省等地区政府之间进行划分。每一级政府都拥有另一级政府不能单方面废除的权力，从而形成一种共享与分立并存的权力体系。这不同于单一制，在单一制中任何地区权力都由中央授予，也可以由中央撤销。
In the United States, the term ‘federal government’ usually refers to the national government in Washington, D.C., but federalism as a concept covers the entire constitutional arrangement between the national government and the fifty state governments. The Constitution establishes both levels as co-existing authorities with direct relationships to the people.
在美国，“联邦政府”一词通常指位于华盛顿特区的国家政府，但联邦制作为一个概念涵盖国家政府与五十个州政府之间的整个宪法安排。宪法确立了两级政府为共存权力机构，各自与人民直接建立关系。
Federalism is therefore not merely administrative decentralisation. It is a constitutional guarantee that states retain meaningful powers and that the national government is limited to the powers delegated to it.
因此，联邦制不仅仅是行政上的权力下放。它是一种宪法保障，确保各州保留实质性权力，而国家政府仅限于被授予的权力。
2. Constitutional Division of Powers | 宪法上的权力划分
The US Constitution establishes federalism through the separation of powers between the federal government and the states. The Tenth Amendment reserves to the states all powers not delegated to the federal government nor prohibited to them by the Constitution. This amendment is often cited by those who argue for a limited national government and robust state autonomy.
美国宪法通过联邦政府与州之间的权力分立确立了联邦制。第十修正案将未授予联邦政府也未禁止各州行使的权力保留给各州。这一修正案经常被主张有限国家政府和强大州自治的人引用。
This division means that both levels of government derive their authority directly from the Constitution and the people, not from each other. A state government does not owe its existence to the federal government, and the federal government does not owe its existence to the states.
这种划分意味着两级政府的权力均直接来源于宪法和人民，而非相互授予。州政府的存在不依赖于联邦政府，联邦政府的存在也不依赖于各州。
The design was a compromise between those who wanted a strong central government and those who wanted to preserve the independence of the former colonies. The result was a compound republic in which sovereignty is shared and divided.
这一设计是希望建立强大中央政府的人与希望保持前殖民地独立性的人之间的妥协。其结果是一个复合共和国，主权在其中被共享和分割。
3. Dual Sovereignty | 双重主权
A defining feature of federalism is dual sovereignty: the federal government and state governments are each sovereign in their own spheres. Citizens are subject to two sets of laws, two court systems, and two levels of taxation. This dual system can be seen in everyday life, such as when a person files both federal and state income tax returns.
联邦制的一个决定性特征是双重主权：联邦政府和州政府在各自的领域内都拥有主权。公民受两套法律、两个法院体系和两级税收的约束。这种双重体系体现在日常生活中，例如一个人既要申报联邦所得税，也要申报州所得税。
Dual sovereignty means that a person can be tried separately for the same act in federal and state courts if the act violates both federal and state law. This is sometimes controversial, but it follows from the principle that each level of government has its own criminal justice system.
双重主权意味着，如果同一行为同时违反了联邦法律和州法律，一个人可以在联邦法院和州法院分别受到审判。这有时会引起争议，但它源于每一级政府都有自己独立的刑事司法体系这一原则。
The existence of dual sovereignty protects state governments from being absorbed by the national government, but it also creates complexity for citizens and businesses that must navigate two layers of regulation.
双重主权的存在保护州政府不被国家政府吞并，但它也给必须应对两层监管的公民和企业带来了复杂性。
4. The Supremacy Clause and Reserved Powers | 最高条款与保留权力
Article VI of the Constitution contains the Supremacy Clause, which makes the Constitution, federal laws, and treaties the supreme law of the land. This means that when federal and state laws conflict, federal law prevails provided it is constitutional. The Supremacy Clause ensures that the national government can act effectively within its delegated powers without being blocked by individual states.
宪法第六条包含最高条款，规定宪法、联邦法律和条约是国家的最高法律。这意味着当联邦法律与州法律发生冲突时，只要联邦法律合宪，联邦法律优先。最高条款确保国家政府在其被授予的权力范围内能够有效行动，而不被个别州所阻挠。
However, the Tenth Amendment protects reserved powers, creating an ongoing tension between national supremacy and state autonomy. The amendment states that powers not delegated to the federal government nor prohibited to the states are reserved to the states or the people.
然而，第十修正案保护保留权力，在国家至上与州自治之间形成了持续的张力。该修正案规定，未授予联邦政府也未禁止各州行使的权力，保留给各州或人民。
- National supremacy: federal law prevails in areas where the federal government has constitutional authority, such as immigration and foreign policy.
- 国家至上：在联邦政府具有宪法权力的领域，如移民和外交政策，联邦法律优先。
- Reserved powers: states keep broad police powers, including health, safety, morals, and general welfare.
- 保留权力：各州保留广泛的警察权力，包括健康、安全、道德和一般福利。
5. Enumerated, Implied, and Concurrent Powers | 列举、默示与共有权力
The Constitution grants different categories of power. Enumerated powers are explicitly listed, such as the power to coin money, declare war, and regulate interstate commerce. These are found mainly in Article I, Section 8, and they define the core authority of the national government.
宪法授予不同类别的权力。列举权力是明确列出的，如铸币、宣战和规制州际贸易的权力。这些权力主要见于第一条第八款，它们界定了国家政府的核心权力。
Implied powers derive from the Necessary and Proper Clause, allowing Congress to make laws needed to carry out its enumerated powers. For example, the power to establish a national bank was not explicitly listed, but it was considered necessary to carry out the enumerated powers of taxation and borrowing.
默示权力源自必要与适当条款，允许国会制定执行其列举权力所必需的法律。例如，设立国家银行的权力并未被明确列出，但被认为对于执行征税和借款的列举权力是必要的。
Concurrent powers are shared, such as taxation, borrowing money, and making and enforcing laws. Reserved powers belong to the states and include areas like education, marriage, and local government.
共有权力是共享的，如征税、借款以及制定和执行法律。保留权力属于各州，包括教育、婚姻和地方政府等领域。
| Type of Power | Examples |
|---|---|
| Enumerated (federal) | Coin money, declare
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