
Powers of the United States Congress are implemented by the
United States Constitution, defined by rulings of the
Supreme Court
A supreme court is the highest court within the hierarchy of courts in most legal jurisdictions. Other descriptions for such courts include court of last resort, apex court, and high (or final) court of appeal. Broadly speaking, the decisions of ...
, and by its own efforts and by other factors such as history and custom. It is the chief legislative body of the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
. Some powers are explicitly defined by the Constitution and are called ''enumerated powers''; others have been assumed to exist and are called ''implied powers''.
Enumerated powers
Article I of the Constitution sets forth most of the powers of Congress, which include numerous explicit powers enumerated in Section 8. Additional powers are granted by other articles and by
Constitutional amendment
A constitutional amendment is a modification of the constitution of a polity, organization or other type of entity. Amendments are often interwoven into the relevant sections of an existing constitution, directly altering the text. Conversely, t ...
s.
Article I
Among the powers specifically given to Congress in Article I Section 8, are the following:
1. To lay and collect
taxes
A tax is a compulsory financial charge or some other type of levy imposed on a taxpayer (an individual or legal entity) by a governmental organization in order to fund government spending and various public expenditures (regional, local, o ...
,
duties
A duty (from "due" meaning "that which is owing"; fro, deu, did, past participle of ''devoir''; la, debere, debitum, whence "debt") is a commitment or expectation to perform some action in general or if certain circumstances arise. A duty may ...
,
imposts and
excises, to pay the debts and provide for the common defense and general welfare of the United States; but all duties, imposts and excises shall be uniform throughout the United States;
2. To
borrow money on the credit of the United States;
3. To
regulate
Regulate may refer to:
* Regulation
* '' Regulate...G Funk Era'', an album from rapper Warren G
** Regulate (song), title song from the album
See also
*
*
* Regulator (disambiguation)
Regulator may refer to:
Technology
* Regulator (automati ...
commerce
Commerce is the large-scale organized system of activities, functions, procedures and institutions directly and indirectly related to the exchange (buying and selling) of goods and services among two or more parties within local, regional, natio ...
with foreign nations, and among the several states, and with the Native American tribes;
4. To establish a
uniform rule of naturalization, and
uniform laws on the subject of bankruptcies throughout the United States;

5. To coin money,
regulate the value thereof, and of foreign coin, and fix the standard of
weights and measures
A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. Any other quantity of that kind can be expressed as a mul ...
;
6. To provide for the punishment of
counterfeit
To counterfeit means to imitate something authentic, with the intent to steal, destroy, or replace the original, for use in illegal transactions, or otherwise to deceive individuals into believing that the fake is of equal or greater value tha ...
ing the securities and current coin of the United States;

7. To establish
post office
A post office is a public facility and a retailer that provides mail services, such as accepting letters and parcels, providing post office boxes, and selling postage stamps, packaging, and stationery. Post offices may offer additional serv ...
s and post roads;
8. 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;
9. To constitute
tribunals inferior to the Supreme Court;
10. To define and punish
piracies and felonies committed on the
high seas
The terms international waters or transboundary waters apply where any of the following types of bodies of water (or their drainage basins) transcend international boundaries: oceans, large marine ecosystems, enclosed or semi-enclosed region ...
, and offenses against the
law of nations;
11. To declare war, grant
letters of marque and reprisal, and make rules concerning captures on land and
water
Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as ...
;
12. To raise and support
armies, but no appropriation of money to that use shall be for a longer term than two years;
13. To provide and maintain a
navy
A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake-borne, riverine, littoral, or ocean-borne combat operations and related functions. It include ...
;
14. To make rules for the government and regulation of the land and naval forces;
15. To provide for calling forth the militia to execute the laws of the union, suppress
insurrections and repel
invasion
An invasion is a military offensive in which large numbers of combatants of one geopolitical entity aggressively enter territory owned by another such entity, generally with the objective of either: conquering; liberating or re-establishing co ...
s;
16. To provide for organizing, arming, and disciplining, the
militia
A militia () is generally an army or some other fighting organization of non- professional soldiers, citizens of a country, or subjects of a state, who may perform military service during a time of need, as opposed to a professional force of r ...
, and for governing such part of them as may be employed in the service of the United States, reserving to the states respectively, the appointment of the officers, and the authority of training the militia according to the discipline prescribed by Congress;
17. To exercise exclusive legislation in all cases whatsoever, over such
District
A district is a type of administrative division that, in some countries, is managed by the local government. Across the world, areas known as "districts" vary greatly in size, spanning regions or county, counties, several municipality, municipa ...
(not exceeding ten miles (16 km) square) as may, by cession of particular states, and the acceptance of Congress, become the seat of the government of the United States, and to exercise like authority over all places purchased by the consent of the legislature of the state in which the same shall be, for the erection of
forts,
magazines
A magazine is a periodical publication, generally published on a regular schedule (often weekly or monthly), containing a variety of content. They are generally financed by advertising, purchase price, prepaid subscriptions, or by a combina ...
,
arsenal
An arsenal is a place where arms and ammunition are made, maintained and repaired, stored, or issued, in any combination, whether privately or publicly owned. Arsenal and armoury (British English) or armory (American English) are mostly ...
s,
dockyards, and other needful buildings.

Article I grants several other powers outside of Section 8. Sections 2 and 3 give Congress the exclusive
impeachment power, allowing impeachment,
trial
In law, a trial is a coming together of parties to a dispute, to present information (in the form of evidence) in a tribunal, a formal setting with the authority to adjudicate claims or disputes. One form of tribunal is a court. The tribun ...
, and removal of the
President, federal judges and other federal officers.
Section 4 allows Congress to "at any time by Law make or alter such Regulations
except as to the Places of chusing Senators" and to appoint by law their own day to assemble. Section 9 allows Congress to withhold consent to any officer of the United States accepting any foreign present, emolument, office, or title. Section 10 allows Congress to control all state laws that lay duties on imports or exports and to withhold consent to any state keeping troops or ships of war in time of peace, engaging in war, or entering into any agreement with another state or foreign power.
Other articles
Additional powers are granted to Congress by the other articles. Article II Section 1 allows Congress to "determine the Time of choosing the Electors
f the Electoral College
F, or f, is the sixth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ef'' (pronounced ), and the plural is ''efs''.
Hist ...
and the Day on which they shall give their Votes; which Day shall be the same throughout the United States". It also says, "the Congress may by Law provide for the Case of Removal, Death, Resignation or Inability, both of the President and Vice President, declaring what Officer shall then act as President, and such Officer shall act accordingly, until the Disability be removed, or a President shall be elected." Section 2 gives the Senate the power of advice and consent to federal appointments made by the president and allows Congress to "vest the Appointment of such inferior Officers, as they think proper, in the President alone, in the Courts of Law, or in the Heads of Departments". Section 3 gives Congress the right to receive information on the state of the union from the president.
Article III Section 2 allows Congress to create exceptions and regulations to the appellate jurisdiction of the Supreme Court and to make laws directing the place of trials of crimes committed outside of a state. Section 3 grants Congress the power "to declare the Punishment of Treason, but no Attainder of Treason shall work Corruption of Blood, or Forfeiture except during the Life of the Person at-tainted."
Article Four Section 3 gives Congress the power to admit new states into the Union. It also grants Congress the power "to dispose of and make all needful Rules and Regulations respecting the Territory or other Property belonging to the United States; and nothing in this Constitution shall be so construed as to Prejudice any Claims of the United States, or of any particular State."
Article V allows Congress to propose amendments to the Constitution and to specify ratification by state legislature or by conventions.It also states that if the amendments are proposed, they would then be sent to the states for ratification.
Amendments
Constitutional amendment
A constitutional amendment is a modification of the constitution of a polity, organization or other type of entity. Amendments are often interwoven into the relevant sections of an existing constitution, directly altering the text. Conversely, t ...
s have also granted, or confirmed, other congressional powers. The
Twelfth Amendment gives Congress the power to choose the president or the vice president if no one receives a majority of Electoral College votes. The
Thirteenth
In music or music theory, a thirteenth is the note thirteen scale degrees from the root of a chord and also the interval between the root and the thirteenth. The interval can be also described as a compound sixth, spanning an octave pl ...
(1865),
Fourteenth (1868), and
Fifteenth Amendments (1870) gave Congress authority to enact legislation to enforce rights of all citizens regardless of race, including
voting rights
Suffrage, political franchise, or simply franchise, is the right to vote in public, political elections and referendums (although the term is sometimes used for any right to vote). In some languages, and occasionally in English, the right to v ...
,
due process
Due process of law is application by state of all legal rules and principles pertaining to the case so all legal rights that are owed to the person are respected. Due process balances the power of law of the land and protects the individual pe ...
, and
equal protection
The Equal Protection Clause is part of the first section of the Fourteenth Amendment to the United States Constitution. The clause, which took effect in 1868, provides "''nor shall any State ... deny to any person within its jurisdiction the equa ...
under the law.
[Davidson (2006), p. 19] The
Sixteenth Amendment, ratified in 1913, extended power of taxation to include
income tax
An income tax is a tax imposed on individuals or entities (taxpayers) in respect of the income or profits earned by them (commonly called taxable income). Income tax generally is computed as the product of a tax rate times the taxable income. Tax ...
es.
[Davidson (2006), p. 18] The
Nineteenth,
Twenty-fourth, and
Twenty-sixth amendments gave Congress the power to enforce the right of citizens, who are eighteen years of age or older, to vote regardless of sex, age, and whether they have paid taxes. The
Twenty-third Amendment gives Congress the power to direct the manner in which the District of Columbia appoints electors. The
Twenty-fifth Amendment
The Twenty-fifth Amendment (Amendment XXV) to the United States Constitution deals with presidential succession and disability.
It clarifies that the vice president becomes president if the president dies, resigns, or is removed from office, a ...
gave Congress the power to determine what body can declare the president unable to discharge the powers and duties of the office and the power to decide whether the president shall resume the powers and duties of the office whenever the president and the body are in conflict.
Implied powers
Congress has
implied powers derived from clauses such as the
General Welfare Clause, the
Necessary and Proper Clause
The Necessary and Proper Clause, also known as the Elastic Clause, is a clause in Article I, Section 8 of the United States Constitution:
Since the landmark decision ''McCulloch v. Maryland'', the US Supreme Court has ruled that this clause gr ...
, and the
Commerce Clause
The Commerce Clause describes an enumerated power listed in the United States Constitution ( Article I, Section 8, Clause 3). The clause states that the United States Congress shall have power "to regulate Commerce with foreign Nations, and amo ...
and from its legislative powers.
Congress has exclusive authority over financial and budgetary matters, through the enumerated power to lay and collect taxes, duties, imposts and excises, to pay the debts and provide for the common defense and general welfare of the United States.
This
power of the purse is one of Congress' primary
checks
Check or cheque, may refer to:
Places
* Check, Virginia
Arts, entertainment, and media
* ''Check'' (film), a 2021 Indian Telugu-language film
* ''The Checks'' (episode), a 1996 TV episode of ''Seinfeld''
Games and sports
* Check (chess), a thr ...
on the executive branch.
In ''
Helvering v. Davis'', the Supreme Court affirmed
Social Security
Welfare, or commonly social welfare, is a type of government support intended to ensure that members of a society can meet basic human needs such as food and shelter. Social security may either be synonymous with welfare, or refer specificall ...
as an exercise of the power of Congress to spend for the general welfare. Generally both Senate and House have equal legislative authority although only the House may
originate revenue bills and, by tradition,
appropriation bills.
The Necessary and Proper Clause of the Constitution permits Congress "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."
Broad interpretations of this clause have effectively widened the scope of Congress' legislative authority, such as in ''
McCulloch v Maryland
''McCulloch v. Maryland'', 17 U.S. (4 Wheat.) 316 (1819), was a landmark U.S. Supreme Court decision that defined the scope of the U.S. Congress's legislative power and how it relates to the powers of American state legislatures. The dispute i ...
,''
which recognized the federal governments authority to establish a national bank under the
tax and spend clause, and that states had no authority to interfere with it.
The Supreme Court has held that Congress has implied powers through the
Commerce Clause
The Commerce Clause describes an enumerated power listed in the United States Constitution ( Article I, Section 8, Clause 3). The clause states that the United States Congress shall have power "to regulate Commerce with foreign Nations, and amo ...
. For example, in ''
Standard Oil Co. of New Jersey v. United States
''Standard Oil Co. of New Jersey v. United States''(1910), was a case
Case or CASE may refer to:
Containers
* Case (goods), a package of related merchandise
* Cartridge case or casing, a firearm cartridge component
* Bookcase, a piece of furn ...
'' and ''
United States v. Darby Lumber Co.'', it was held that Congress could
divide monopolies, prohibit
child labor
Child labour refers to the exploitation of children through any form of work that deprives children of their childhood, interferes with their ability to attend regular school, and is mentally, physically, socially and morally harmful. Such ...
, and establish a
minimum wage
A minimum wage is the lowest remuneration that employers can legally pay their employees—the price floor below which employees may not sell their labor. Most countries had introduced minimum wage legislation by the end of the 20th century. B ...
under the Commerce Clause. Also, in ''
Wickard v Filburn'' it was held that the Section 8 power "To regulate commerce…among the several states" gave Congress the authority to limit the amount of wheat that a farmer could grow in order to feed animals on his own farm, even though this activity was not commerce and was not interstate, because such activities by private individuals had a substantial economic effect on interstate commerce in wheat, even though only indirectly.

One of the foremost legislative functions of the Congress is the power to investigate and to oversee the executive branch.
Congressional oversight is usually delegated to
committees and is facilitated by Congress' subpoena power.
The Supreme Court affirmed in ''
Watkins v. United States'' that "
hepower of the Congress to conduct investigations is inherent in the legislative process" and that "
tis unquestionably the duty of all citizens to cooperate with the Congress in its efforts to obtain the facts needed for intelligent legislative action. It is their unremitting obligation to respond to subpoenas, to respect the dignity of the Congress and its committees and to testify fully with respect to matters within the province of proper investigation." Some critics have charged that Congress has in some instances failed to do an adequate job of
overseeing the other branches of government. In the
Valerie Plame Wilson episode sometimes known as the
Plame affair
The Plame affair (also known as the CIA leak scandal and Plamegate) was a political scandal that revolved around journalist Robert Novak's public identification of Valerie Plame as a covert Central Intelligence Agency officer in 2003.
In 2002, ...
, some critics, including Representative
Henry A. Waxman, charged that Congress was not doing an adequate job of oversight in this case.
Other critics charge Congress was lax in its oversight duties regarding presidential actions such as
warrantless wiretapping, although others respond that Congress did investigate the legality of decisions by President
George W. Bush involving such matters.
Erosion of congressional authority
Although the Constitution gives Congress an important role in
national defense
National security, or national defence, is the security and defence of a sovereign state, including its citizens, economy, and institutions, which is regarded as a duty of government. Originally conceived as protection against military att ...
, including the exclusive power to declare war, to raise and maintain the
armed forces
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct ...
, and to make rules for the military,
some critics charge that the
executive branch
The Executive, also referred as the Executive branch or Executive power, is the term commonly used to describe that part of government which enforces the law, and has overall responsibility for the governance of a state.
In political systems b ...
has usurped Congress's Constitutionally-defined task of declaring war.
[
*
*
*
] While historically presidents initiated the process for going to war, they asked for and received formal war declarations from Congress for the
War of 1812
The War of 1812 (18 June 1812 – 17 February 1815) was fought by the United States of America and its indigenous allies against the United Kingdom and its allies in British North America, with limited participation by Spain in Florida. It ...
, the
Mexican–American War
The Mexican–American War, also known in the United States as the Mexican War and in Mexico as the (''United States intervention in Mexico''), was an armed conflict between the United States and Second Federal Republic of Mexico, Mexico f ...
, the
Spanish–American War
, partof = the Philippine Revolution, the decolonization of the Americas, and the Cuban War of Independence
, image = Collage infobox for Spanish-American War.jpg
, image_size = 300px
, caption = (cl ...
,
World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...
, and
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
,
although President
Theodore Roosevelt
Theodore Roosevelt Jr. ( ; October 27, 1858 – January 6, 1919), often referred to as Teddy or by his initials, T. R., was an American politician, statesman, soldier, conservationist, naturalist, historian, and writer who served as the 26t ...
's military move into Panama in 1903 did not get congressional assent.
Presidents have initiated war without congressional war declarations; Truman called the
Korean War
{{Infobox military conflict
, conflict = Korean War
, partof = the Cold War and the Korean conflict
, image = Korean War Montage 2.png
, image_size = 300px
, caption = Clockwise from top: ...
a "police action" and the
Vietnam War
The Vietnam War (also known by #Names, other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vie ...
lasted over a decade without a declaration of war.
In 1970, Time magazine noted: "All told, it has been calculated, U.S. presidents have ordered troops into position or action without a formal congressional declaration a total of 149 times" before 1970.
In 1993, one writer noted "Congress's war power has become the most flagrantly disregarded provision in the Constitution," and that the "real erosion (of congressional authority to declare war) began after World War II."
President
George H. W. Bush claimed he could begin
Operation Desert Storm
Operation or Operations may refer to:
Arts, entertainment and media
* ''Operation'' (game), a battery-operated board game that challenges dexterity
* Operation (music), a term used in musical set theory
* ''Operations'' (magazine), Multi-Ma ...
and launch a "deliberate, unhurried, post–Cold War decision to start a war" without congressional approval.
Critics charge that President
George W. Bush largely initiated the
Iraq War
{{Infobox military conflict
, conflict = Iraq War {{Nobold, {{lang, ar, حرب العراق (Arabic) {{Nobold, {{lang, ku, شەڕی عێراق ( Kurdish)
, partof = the Iraq conflict and the War on terror
, image ...
with little debate in Congress or consultation with Congress, despite a congressional vote on
military force authorization.
Disagreement about the extent of congressional versus presidential power regarding war has been present periodically throughout the nation's history.
Congress has also delegated powers to lay duties and regulate commerce onto the president. It passed the
Trading with the Enemy Act of 1917, which allowed the president to oversee and restrict commerce and impose tariffs or sanctions whenever there is an ongoing war. In 1962, it passed the
Trade Expansion Act allowing the president to impose and adjust tariffs on articles that threaten national security. In 1977, it passed the
International Emergency Economic Powers Act, allowing the president to declare national emergencies that would authorize him with the power to regulate commerce.
Congress has given over a hundred emergency powers, such as the power to divert money that was appropriated for the military, to the president through various laws and has authorized the president with the power to declare national emergencies through the
National Emergencies Act. It has become common for presidents to declare emergencies, with over 30 different states of emergency being in simultaneous effect in 2019. Although the law requires Congress to consider a vote on each state of emergency every six months, Congress as never done so as of 2019.
Congress has delegated immigration powers to the president in the
Immigration and Nationality Act of 1952
The Immigration and Nationality Act of 1952 (), also known as the McCarran–Walter Act, codified under Title 8 of the United States Code (), governs immigration to and citizenship in the United States. It came into effect on June 27, 1952. Befor ...
, authorizing the president to create restrictions on or suspend the entry of some or all aliens into the United States and to set the period for such restrictions or suspension.
Congress delegated department regulation powers to the Department of Justice when it allowed the
special prosecutor
In the United States, a special counsel (formerly called special prosecutor or independent counsel) is a lawyer appointed to investigate, and potentially prosecute, a particular case of suspected wrongdoing for which a conflict of interest exi ...
provisions of the
Ethics in Government Act to expire in 1999. Since then, the Justice Department creates its own regulations on special counsels.
Congress has in recent times allowed its power to consent to foreign emoluments fall into disuse. In the past, Congress explicitly gave or withheld consent, such as when it refused to allow Andrew Jackson to receive a gold medal from Venezuela or when it allowed Abraham Lincoln to receive elephant tusks and a sword from Siam and place them with the Interior Department.
References