
Article I, Section 1 of the United States Constitution is the first section of Article I, which outlines the powers of the legislative branch of the federal government. This section is a vesting clause that grants all federal legislative powers to Congress, which consists of a Senate and a House of Representatives. This separation of powers is designed to ensure that no one person or group wields too much power and that each branch acts as a check on the others.
| Characteristics | Values |
|---|---|
| Legislative power | Vested in a Congress of the United States, which consists of a Senate and House of Representatives |
| Executive power | Granted to the President |
| Judicial power | Granted to the federal judiciary |
| Separation of powers | Each branch may exercise only its own constitutional powers, and no others |
| Checks and balances | Each branch acts as a check on the power of the other two branches |
| Congress meetings | Congress shall assemble at least once every year, on the first Monday in December, unless a different day is appointed by law |
| Quorum | A majority of each House shall constitute a quorum to do business |
| Powers | To promote the progress of science and useful arts, to constitute tribunals inferior to the Supreme Court, to define and punish piracies and felonies committed on the high seas, to declare war, to raise and support armies, to make rules concerning captures on land and water, etc. |
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What You'll Learn

Legislative power vested in Congress
Article I, Section 1 of the United States Constitution, also known as the Legislative Vesting Clause, establishes the legislative branch of the federal government and vests all legislative powers in a Congress of the United States. This separation of powers grants legislative power (the authority to create laws) exclusively to Congress, ensuring that no other branch can usurp this function.
The Legislative Vesting Clause sets forth the structure of Congress, specifying that it shall consist of two chambers: the Senate and the House of Representatives. This bicameral legislature is designed to represent the states and the people, with the House of Representatives apportioned among the states according to their respective populations. The clause empowers Congress to conduct censuses every ten years to determine the representation in the House, although the size of the House has remained constant at 435 members since the Reapportionment Act of 1929.
The legislative powers vested in Congress include the authority to pass laws necessary and proper for executing the powers outlined in the Constitution. This encompasses a range of responsibilities, such as regulating immigration, protecting intellectual property rights, establishing inferior courts to the Supreme Court, defining and punishing crimes committed on the high seas and offenses against the law of nations, declaring war and making rules concerning captures, raising and supporting armies, and more.
Congress also holds specific powers related to taxation and representation. While direct taxes must be apportioned according to state populations, Congress can levy taxes on imports and immigration. Additionally, Congress has the authority to make or alter regulations regarding the times, places, and manner of holding elections for Senators and Representatives, except for the places of choosing Senators.
The Legislative Vesting Clause is a fundamental aspect of the US Constitution, ensuring that the power to create laws rests with Congress, thereby promoting accountability and limiting the influence of any one person or group within the federal government.
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Separation of powers
Section 1 of Article I of the United States Constitution is a vesting clause that bestows federal legislative power exclusively to Congress, which consists of a Senate and a House of Representatives. This is an example of the separation of powers, as it grants legislative power to Congress, executive power to the president, and judicial power to the federal judiciary.
The separation of powers is a fundamental concept in the US Constitution, dividing the powers of government into three branches: legislative, executive, and judicial. Each branch has its own unique and limited powers, and is independent of the others. This ensures that no one person or group has too much power, and each branch acts as a check on the others.
The legislative branch, or Congress, is responsible for making laws. The executive branch, led by the president, administers the laws. The judicial branch, made up of the federal courts, interprets and enforces the laws.
The framers of the Constitution believed that this separation of powers would create a system of checks and balances, with each branch holding the others accountable and preventing any one branch from becoming too powerful. This system is designed to protect against tyranny and ensure a limited government that is accountable to the people.
The separation of powers also allows for collaboration between the branches. In some cases, two branches must work together, such as when Congress passes a law that the president then signs and the courts interpret and enforce. This collaboration further ensures that the powers of the government are balanced and that the interests of the people are served.
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Congress makeup: Senate and House of Representatives
The makeup of Congress, as outlined in Article I, Section 1 of the US Constitution, consists of a Senate and a House of Representatives. This section is known as the Legislative Vesting Clause, and it bestows federal legislative power exclusively to Congress.
The legislative power granted to Congress includes the authority to pass laws necessary for executing the powers vested in the Constitution. This includes the power to regulate immigration, suspend the writ of habeas corpus in cases of rebellion or invasion, and enact laws regarding taxation, trade, and commerce.
The House of Representatives, as outlined in Article I, is the lower chamber of Congress. The size of the House and the number of representatives from each state are determined based on the state's population. Each state is guaranteed at least one representative, and the number of representatives should not exceed one for every thirty thousand people. The House of Representatives has the sole power of impeachment and the power to choose its Speaker and other officers.
The Senate, on the other hand, is the upper chamber of Congress. The election of senators is prescribed by each state's legislature, but Congress can make or alter regulations regarding the election process, except for the places of choosing senators.
The separation of powers between the Senate and the House of Representatives ensures that lawmaking power is distributed, and no one person or group holds all legislative power. This system of checks and balances is a fundamental aspect of the US Constitution, promoting accountability and limiting governmental power.
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Congressional limitations
Article 1, Section 1 of the United States Constitution establishes the legislative branch of the federal government, outlining its structure and powers. This section, also known as the Legislative Vesting Clause, grants legislative powers exclusively to Congress, which consists of the Senate and the House of Representatives. This separation of powers is a fundamental principle in the Constitution, ensuring that the federal government's authority is limited and accountable to the people.
Additionally, Article 1 outlines further limitations on congressional power. For instance, Congress is responsible for assembling at least once a year, with meetings taking place on the first Monday in December unless otherwise determined by law. The Constitution also grants Congress the authority to make or alter regulations regarding the times, places, and manner of holding elections for Senators and Representatives, except for the places of choosing Senators. Moreover, each House is responsible for judging the elections, returns, and qualifications of its members, requiring a majority to constitute a quorum for business.
While Article 1 grants Congress broad powers, certain limitations are implied or have emerged through interpretation. For example, the Necessary and Proper Clause in Article 1, Section 8, Clause 18, grants Congress the power to make laws necessary for executing its enumerated powers. However, some argue that this clause has been interpreted too broadly, leading to an expansion of federal government powers beyond those expressly delegated by the states. The General Welfare Clause and the Commerce Clause have also been cited as granting expansive powers to Congress.
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Congressional duties
Article I, Section 1 of the United States Constitution outlines the legislative duties and powers of Congress. This section is known as the Legislative Vesting Clause, and it grants all legislative powers to Congress, which consists of a Senate and a House of Representatives. This separation of powers is a fundamental principle in the US government, ensuring that the legislative, executive, and judicial branches each have their own distinct roles and responsibilities.
Congress, as outlined in Article I, is responsible for making laws. This includes the power to pass laws necessary for executing the powers vested in the government by the Constitution. Congress can also regulate the migration or importation of persons, provided it does not restrict the importation of slaves before 1808. Additionally, Congress has the authority to levy taxes and duties, with certain restrictions, such as the requirement to apportion direct taxes based on state populations.
The duties of Congress also include the establishment of inferior tribunals to the Supreme Court and the definition and punishment of piracies, felonies on the high seas, and offenses against the law of nations. They have the power to declare war, grant letters of marque and reprisal, and make rules concerning captures on land and water. Congress can also raise and support armies, although appropriations for this purpose are limited to a maximum of two years.
Furthermore, Congress plays a role in the reapportionment of House seats following each census. The number of representatives in the House is determined based on the relative population of each state, with a minimum of one representative per state. The size of the House has been set at 435 seats since the Reapportionment Act of 1929. Additionally, Congress has the power to make or alter regulations regarding the times, places, and manner of holding elections for Senators and Representatives, except for the places of choosing Senators.
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Frequently asked questions
Section 1 of Article I of the US Constitution describes the legislative branch of the government.
Section 1 states that "All legislative Powers herein granted shall be vested in a Congress of the United States, which shall consist of a Senate and House of Representatives." In other words, laws are made by Congress, which consists of the Senate and the House of Representatives.
Section 1 is significant because it establishes the separation of powers between the three branches of the federal government. It grants legislative power to Congress, executive power to the President, and judicial power to the federal judiciary. This separation ensures that no one person or group has too much power and that each branch can check the power of the others.

























