
Article I, Section 8 of the US Constitution outlines the powers of the US Congress. It grants Congress the authority to perform a range of legislative functions, including the power to lay and collect taxes, duties, imposts, and excises, as well as to regulate commerce with foreign nations and among the states. Additionally, it empowers Congress to establish a uniform rule of naturalization, coin money, promote progress in science and the arts, and provide for the common defence of the nation.
| Characteristics | Values |
|---|---|
| Powers of Congress | To lay and collect taxes, duties, imposts and excises |
| To coin money, regulate the value thereof, and of foreign coin, and fix the standard of weights and measures | |
| To constitute tribunals inferior to the Supreme Court | |
| To declare war, grant letters of marque and reprisal, and make rules concerning captures on land and water | |
| To raise and support armies | |
| To provide for calling forth the militia to execute the laws of the Union, suppress insurrections and repel invasions | |
| To provide for organizing, arming, and disciplining, the militia | |
| To define and punish piracies and felonies committed on the high seas, and offenses against the law of nations | |
| To promote the progress of science and useful arts, by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries | |
| To make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this Constitution in the government of the United States, or in any department or officer thereof | |
| To exercise exclusive legislation in all cases whatsoever, over such a district (not exceeding ten miles square) as may, by cession of particular states, and the acceptance of Congress, become the seat of the government of the United States | |
| To regulate commerce with foreign nations, and among the several states, and with the Indian tribes |
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What You'll Learn

Congress's power to tax
Article I, Section 8 of the US Constitution outlines the powers of Congress. One of the most important powers it enumerates is the power to tax. This power is often referred to as the "power of the purse".
The "power of the purse" gives Congress the authority to levy taxes, tariffs, and other forms of revenue collection, as well as to appropriate federal funds. This power extends to laying and collecting taxes, duties, imposts, and excises to pay off debts and provide for the common defence and general welfare of the United States. These taxes must be uniform throughout the country.
Congress also has the power to regulate commerce with foreign nations, among the states, and with Native American tribes. This includes the power to regulate business activities between states, which has been used as a basis for passing federal legislation on matters previously managed by individual states.
In addition to taxation, Article I, Section 8 grants Congress the power to coin money and regulate its value, as well as the value of foreign currency. This includes the power to punish counterfeiting of US securities and currency. Congress can also establish a national debt by issuing bonds.
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Congress's power to borrow money
Article I, Section 8 of the US Constitution outlines the powers of Congress in detail. These powers are limited to those listed and those "necessary and proper" for executing them.
Congress has the power to borrow money by issuing bonds. This creates a national debt that the United States is obligated to repay. This power to appropriate federal funds is known as the "power of the purse." It gives Congress significant authority over the executive branch, which must appeal to Congress for funding.
Article I, Section 8 grants Congress the power to "lay and collect Taxes, Duties, Imposts and Excises... to pay the Debts and provide for the common Defence and general Welfare of the United States." This clause allows Congress to raise revenue through various means, including taxes, tariffs, and other excises. The power to tax is one of the most important powers granted to Congress, as it provides the federal government with the funds necessary to function.
In addition to the power to tax and borrow money, Congress can also regulate the value of money and fix the standard of weights and measures. This includes the power to coin money and regulate the value of both US and foreign currency. Congress also has the responsibility to provide for the punishment of counterfeiting US securities and currency.
The power to borrow money and appropriate funds gives Congress significant influence over the federal budget and the nation's fiscal policies. This power, along with the power to tax, provides Congress with the means to fund the government and its various programs and initiatives. However, it is important to note that Congress's power to borrow money and incur debt is not unlimited and is subject to political and economic considerations.
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Congress's power to regulate commerce
Article I, Section 8 of the US Constitution outlines the powers of Congress. One of these powers is the ability to "regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes". This clause gives Congress the authority to regulate business activities across state lines and with other countries and tribes.
The commerce clause also allows Congress to address economic disparities and promote economic development in specific regions or industries. For instance, they can provide incentives or subsidies to encourage investment in struggling areas or industries, such as agriculture or manufacturing. This power can also be used to establish federal regulatory agencies, such as the Federal Trade Commission, which ensures fair competition and protects consumers.
In recent times, the US Supreme Court has shown greater concern for states' rights and has limited Congress's power to pass legislation under the commerce clause. The Court has ruled that certain federal laws, such as those aimed at protecting battered women or schools from gun violence, are unconstitutional as these policy matters are deemed to be the responsibility of individual states. This shift in interpretation highlights the dynamic nature of constitutional law and the ongoing dialogue between the legislative and judicial branches of government.
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Congress's power to coin money
Article I, Section 8 of the US Constitution outlines the powers of Congress. These powers are limited to those explicitly listed in the Constitution and those “necessary and proper” for executing them. One of the key powers granted to Congress is the ability to coin money, regulate its value, and punish counterfeiting.
The power to coin money is significant as it allows Congress to establish a uniform currency for the entire nation. This promotes economic stability and facilitates commerce and trade within the United States. By regulating the value of money, Congress can also control inflation and ensure the stability of the US dollar. Additionally, this power enables Congress to respond to economic crises or unexpected events that may impact the country's financial stability.
Furthermore, Congress's power to coin money is closely tied to its ability to punish counterfeiting. Article I, Section 8, Clause 6 grants Congress the authority " [t]o provide for the Punishment of counterfeiting the Securities and current Coin of the United States." This clause recognizes the importance of maintaining the integrity of the nation's currency and enables Congress to enact laws and penalties to deter and punish the counterfeiting of US currency.
In conclusion, Congress's power to coin money, as outlined in Article I, Section 8, is a critical aspect of the US Constitution. It empowers Congress to establish a uniform currency, regulate its value, and maintain its integrity by punishing counterfeiting. This power plays a vital role in ensuring economic stability, facilitating commerce, and upholding the value of the US dollar both domestically and internationally.
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Congress's power to declare war
Article I, Section 8 of the US Constitution outlines the powers of Congress. It grants Congress the power to declare war, raise and support armies, and define and punish piracies and felonies committed on the high seas.
The power to declare war is often referred to as the War Powers Clause. This clause gives Congress the authority to formally declare war, distinguishing it from the executive's power to repel sudden attacks. The Constitution does not specify the form that a declaration of war must take, and there has been debate over the legal extent of the president's authority in this area.
Congress has formally declared war on five separate occasions:
- The War of 1812 against the United Kingdom
- The Mexican-American War in 1846
- The Spanish-American War
- World War I
- World War II
In addition to these formal declarations, Congress has also authorised the use of force in various other conflicts, such as the Vietnam War and the 2011 attacks on Libyan forces. The War Powers Resolution, passed in 1973, requires the President to obtain either a declaration of war or an authorisation to use force from Congress within 60 days of initiating hostilities.
The power to declare war is an important check on the executive branch's ability to commit the nation to war, ensuring that the decision to go to war is not left to a single individual.
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Frequently asked questions
Section 8 of the US Constitution outlines the powers of Congress.
Congress has the power to:
- Lay and collect taxes, duties, imposts, and excises
- Provide for the common defence and general welfare of the United States
- Regulate commerce with foreign nations, and among the several states
- Establish an uniform rule of naturalization, and uniform laws on the subject of bankruptcies
- Coin money, regulate the value thereof, and of foreign coin, and fix the standard of weights and measures
- Provide for the punishment of counterfeiting the securities and current coin of the United States
- Promote the progress of science and useful arts, by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries
- Constitute tribunals inferior to the Supreme Court
- Define and punish piracies and felonies committed on the high seas, and offenses against the law of nations
- Declare war, grant letters of marque and reprisal, and make rules concerning captures on land and water
- Raise and support armies, but no appropriation of money to that use shall be for a longer term than two years
- Provide for calling forth the militia to execute the laws of the Union, suppress insurrections and repel invasions
Section 8 is significant because it specifies the powers of Congress in detail, and these powers are limited to those listed and those "necessary and proper" to execute them. This gives Congress great authority over the executive branch, as it must appeal to Congress for all of its funding.
In recent years, the US Supreme Court has limited the power of Congress to pass legislation under Section 8. However, Congress has used its powers to:
- Create the postal service
- Establish the army, navy, and lower federal courts
- Declare war
- Determine naturalization, or how immigrants become citizens
Section 8 is part of Article I of the Constitution, which describes the design of the legislative branch of the US government, or Congress. Article I also covers the separation of powers between branches of government, the election of Senators and Representatives, and the process by which laws are made.

























