
The US Constitution is the supreme law of the land, outlining the division of power between the federal and state governments. Federalism, a system that divides governance between federal and state governments, is a key feature of the US Constitution, allowing states to act as laboratories of democracy. The Constitution grants civil rights and liberties to individuals, such as freedom of speech, press, and religion, and sets rules for due process under the law. It also establishes the federal government's powers, including the ability to control interstate commerce and make naturalization rules. The Tenth Amendment reserves all powers not explicitly granted to the federal government for the states or the people. The Constitution's interpretation and application have evolved over time, with four distinct phases of federalism: post-Founding, post-Civil War, post-New Deal, and from the Rehnquist Court to the present. The ongoing power struggles between federal and state governments reflect the dynamic nature of federal power in the US.
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What You'll Learn

Federalism and the scope of federal power
Federalism in the United States refers to the division of power between the federal government and individual state governments. The US Constitution established a federal government with defined powers, and a system of checks and balances to prevent the abuse of power. Federalism ensures a powerful central government while preserving the liberty of the governed.
The Constitution outlines the federal government's powers, with any powers not specifically delegated to the federal government being reserved for the states. This is outlined in the Tenth Amendment, which grants state governments all powers not explicitly given to the federal government. The Ninth Amendment also clarifies that the Bill of Rights does not enumerate all possible rights of the people. The First Amendment, for example, guarantees freedom of speech, press, and religion, while the Second Amendment protects the right to bear arms.
The US Constitution replaced the Articles of Confederation, which was a treaty among sovereign states that gave most of the power to the states and very little to Congress. The Constitution, ratified by the people in state conventions, provided the national government with more powers and allowed it to act on behalf of the citizenry directly. Federalism has gone through four distinct phases in US constitutional history: post-Founding, post-Civil War, post-New Deal, and from the Rehnquist Court to the present.
The Civil War marked a shift in federalism, with the Thirteenth Amendment eliminating the power of states to enforce slavery. The Fourteenth Amendment was also created to write protections against slavery into the Constitution. The federal government has also claimed authority over the drug trade and immigration, while states have pushed back to claim their own authority over intrastate commerce and public safety, particularly in the case of marijuana legislation.
The Supreme Court plays a significant role in defining the powers of the federal government and determining whether federal laws are constitutional. The Necessary and Proper Clause, for instance, gives the federal government certain implied powers. Federal laws take priority over state laws due to the Supremacy Clause in Article VI of the Constitution, which names the US Constitution as "the supreme law of the land."
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The Supremacy Clause
The core principle of the Supremacy Clause is that the Constitution, federal laws, and treaties made under the authority of the United States are the supreme Law of the Land. This means that judges in every state are bound by these laws, regardless of any conflicting state constitutions or laws. The Supremacy Clause reinforces the idea of "Enumerated Powers Federalism," where the national government has limited and enumerated powers, and state powers encompass all authorities not explicitly granted to the federal government.
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The Necessary and Proper Clause
This clause is unique in the Constitution as it expressly grants incidental powers to Congress. It was added late to Article I, arousing little discussion at the Constitutional Convention, but it became one of the most controversial issues during the ratification debates. Anti-Federalists feared that it would grant the federal government unlimited power, while Federalists argued that it would only permit the execution of powers granted by the Constitution. Alexander Hamilton, a key figure in these debates, defended the clause, stating that it applied to activities reasonably related to constitutional powers.
The clause has also been invoked to defend the federal government's control over currency, its ability to regulate intrastate commerce, and its power to define and punish crimes. The Supreme Court has generally upheld this broad interpretation, but in cases like Printz v. United States (1997), it ruled that certain federal laws requiring state officials to enforce federal gun control measures were not "proper" as they infringed on federal-state boundaries.
Overall, the Necessary and Proper Clause has been a pivotal tool in shaping the federal government's authority and continues to be a subject of debate and interpretation.
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The Tenth Amendment
The text of the Tenth Amendment is as follows: "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 reinforces the principle that the national government has limited and enumerated powers, with state powers encompassing all authorities not explicitly granted to the federal government.
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Civil rights and liberties
The US Constitution is a document that outlines the rights and liberties of citizens in relation to their government. The first ten amendments to the Constitution, known as the Bill of Rights, were added to limit government power and protect individual liberties. James Madison, a Federalist, wrote these amendments. Federalists believed that a large government could protect liberties, and that the diversity of opinions would protect any one group from becoming too powerful. Anti-Federalists, on the other hand, wanted power to remain with state and local governments and favoured a bill of rights to safeguard individual liberty.
The Bill of Rights guarantees civil rights and liberties such as freedom of speech, press, and religion. It also sets rules for due process of law and reserves all powers not delegated to the federal government for the people or the states. The First Amendment, for example, prevents the government from creating or favouring a religion and protects citizens' right to free speech. The Fourth Amendment protects citizens' right to be free from unreasonable government intrusion in their homes, requiring a warrant for any searches and seizures. The Fifth Amendment protects citizens from double jeopardy and self-incrimination, and guarantees due process of law and just compensation for public use of private property.
The Ninth Amendment states that the listing of specific rights in the Constitution does not deny other rights retained by the people that have not been explicitly mentioned. The Tenth Amendment further emphasises this by stating that the federal government only has the powers delegated to it by the Constitution.
Following the Civil War, three new amendments were added to the Constitution to guarantee equal civil and legal rights to Black citizens. The Thirteenth Amendment (1865) abolished slavery, the Fourteenth Amendment (1868) granted citizenship to formerly enslaved people and extended liberties and rights granted by the Bill of Rights to them, and the Fifteenth Amendment (1870) guaranteed the right to vote for formerly enslaved men. The Fourteenth Amendment also placed a significant federal limitation on the states by requiring them to provide "due process of law" and "equal protection of its laws" to all citizens.
The Supreme Court has played a significant role in interpreting and applying these rights and liberties. Through a process known as "selective incorporation", the Court has used the due process clause to protect other rights guaranteed in the Bill of Rights from state infringement.
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Frequently asked questions
The US Constitution is the supreme law of the land, outlining the rules and regulations that govern the country. It was ratified in 1787, replacing the Articles of Confederation, and establishing a federalist system with a more balanced division of powers between the federal and state governments.
Federalism refers to the division of power between the federal government and the individual state governments. The US Constitution establishes a federal government with defined powers, while reserving authority for the states to govern themselves. The Tenth Amendment reinforces this principle by stating that any powers not delegated to the federal government are reserved for the states.
In cases where federal and state laws conflict, federal laws take priority due to the "Supremacy Clause" in Article VI of the Constitution, which establishes the Constitution and federal laws as "the supreme law of the land."

























