, the principal author of the
Declaration of Independence, largely wrote the Declaration's first draft in isolation between over a period of two weeks in June 1776 from the second floor of a three-story home he was renting at 700
Market Street in
Philadelphia; the document was then reviewed and ultimately unanimously adopted by each of the 56 delegates to the
Second Continental Congress. The U.S. government was established in a series of initiatives in the late 18th century, starting with its decision to establish the
Continental Army and appoint
George Washington as its commander. The Continental Army resisted the
British during the
American Revolutionary War, which began in 1775. The following year, in July 1776, delegates to the
Second Continental Congress, gathered at present-day
Independence Hall in the colonial capital of
Philadelphia, unanimously adopted the
United States Declaration of Independence with each of the 56 colonial-era delegates signing it. In September 1783, the Thirteen Colonies ultimately prevailed over the British in the Revolutionary War, establishing the United States as an independent nation. On March 4, 1789, again gathered in Philadelphia, the colonies ratified and adopted the
Constitution of the United States, which established the nation's federal rule of law and was largely based on
federalism,
republicanism and
democracy. Under the U.S. Constitution, the power of the U.S. federal government is shared between its executive, legislative, and judicial branches,
state governments, and the people. It is a mixed system, neither pure republic nor pure democracy, and often described as a
democratic republic,
representative democracy, or constitutional
republic. The interpretation and execution of these principles, including what powers the federal government should have and how those powers can be exercised, have been debated ever since the adoption of the Constitution. Some make a case for expansive federal powers while others argue for a more limited role for the central government in relation to individuals, the states, or other recognized entities. Since the
American Civil War, the powers of the federal government have expanded greatly, although there have been periods since that time when the legislative branch was more powerful, including the decades immediately following the Civil War, or when
states' rights proponents have succeeded in limiting federal power through legislative action, executive prerogative or by a constitutional interpretation by the courts. One of the theoretical pillars of the U.S. Constitution is the idea of "
checks and balances" among the powers and responsibilities of the three branches of American government: the executive, the legislative, and the judiciary. For example, while
Congress, the federal government's legislative branch, has the power to create laws, the executive branch under the
president can
veto legislation, an act which, in turn, can be overridden by Congress. The president nominates judges to the nation's highest judiciary authority, the
Supreme Court (as well as to lower federal courts), but those nominees must be approved by Congress. The Supreme Court, in turn,
can invalidate unconstitutional laws passed by the Congress. ==Legislative branch== , the
seat of government for
Congress, the legislative branch of the U.S. government The
United States Congress, under Article I of the Constitution, is the legislative branch of the federal government. It is
bicameral, comprising the
House of Representatives and the
Senate.
Makeup of Congress House of Representatives grouped by state The
U.S. House of Representatives is made up of 435 voting members, each of whom represents a
congressional district in a state from where they were elected. Apportionment of seats among the 50 states is determined by state populations, and it is updated after each
decennial U.S. Census. Each member serves a two-year term. In order to be elected as a representative, an individual must be at least 25 years of age, must have been a
U.S. citizen for at least seven years, and must live in the state that they represent. In addition to the 435 voting members, there are six non-voting members, consisting of five delegates and one
resident commissioner. There is one delegate each from
Washington, D.C.,
Guam, the
Virgin Islands,
American Samoa, the
Commonwealth of the Northern Mariana Islands, and a
resident commissioner from
Puerto Rico. Unlike the
U.S. Senate, all members of the U.S. House must be elected and cannot be appointed. In the case of a vacancy, the seat must be filled through a special election, as required under Article 1 of the U.S. Constitution.
Senate In contrast, the Senate is made up of two senators from each state, regardless of population. There are currently 100 senators (2 from each of the 50 states), who each serve six-year terms. Approximately one-third of the Senate stands for election every two years. If a vacancy occurs, the state governor appoints a replacement to complete the term or to hold the office until a special election can take place.
Separate powers The House and Senate each have particular exclusive powers. For example, the Senate must approve (give "
advice and consent" to) many important presidential appointments, including cabinet officers,
federal judges (including nominees to the Supreme Court), department secretaries (heads of federal executive branch departments), U.S. military and naval officers, and
ambassadors to foreign countries. All legislative bills for raising revenue must originate in the House of Representatives. The approval of both chambers is required to pass all legislation, which then may only become law by being signed by the president (or, if the president
vetoes the bill, both houses of Congress then re-pass the bill, but by a
two-thirds majority of each chamber, in which case the bill becomes law without the president's signature). The powers of Congress are limited to those enumerated in the Constitution; all other powers are reserved to the states and the people. The Constitution also includes the
Necessary and Proper Clause, which grants Congress the power to "make all laws which shall be necessary and proper for carrying into execution the foregoing powers". Members of the House and Senate are elected by
first-past-the-post voting in every state except
Louisiana and
Georgia, which have
runoffs, and
Maine and
Alaska, which use
ranked-choice voting.
Impeachment of federal officers Congress has the power to remove the president, federal judges, and other federal officers from office. The House of Representatives and Senate have separate roles in this process. The House must first vote to impeach the official. Then, a trial is held in the Senate to decide whether the official should be removed from office. , three presidents have been impeached:
Andrew Johnson,
Bill Clinton, and
Donald Trump (twice). None of the three were removed from office following trial in the Senate.
Congressional procedures Article I, Section 2, paragraph 2 of the U.S. Constitution gives each chamber the power to "determine the rules of its proceedings". From this provision were created
congressional committees, which do the work of drafting legislation and conducting congressional investigations into national matters. The
118th Congress (2023–2025) has 20 standing committees in the House and 19 in the Senate, plus 4 joint permanent committees with members from both houses overseeing the
Library of Congress, printing, taxation, and the economy. In addition, each house may name special, or select, committees to study specific problems. Today, much of the congressional workload is borne by the subcommittees, of which there are around 150.
Powers of Congress The Constitution grants numerous powers to Congress. Enumerated in Article I, Section 8, these include the powers to levy and collect
taxes; to coin money and regulate its value; provide for punishment for counterfeiting; establish post offices and roads, issue patents, create federal courts inferior to the
Supreme Court, combat
piracies and
felonies, declare
war, raise and support
armies, provide and maintain a
navy, make rules for the regulation of land and naval forces, provide for, arm and discipline the
militia, exercise exclusive legislation in the
District of Columbia, regulate
interstate commerce, and to make laws necessary to properly execute powers. Over the two centuries since the United States was formed, many disputes have arisen over the limits on the powers of the federal government. These disputes have often been the subject of lawsuits that have ultimately been decided by the
United States Supreme Court.
Congressional oversight Congressional oversight is intended to prevent waste and fraud, protect
civil liberties and individual rights, ensure executive compliance with the law, gather information for making laws and educating the public, and evaluate executive performance. It applies to cabinet departments, executive agencies, regulatory commissions, and the presidency. Congress's oversight function takes many forms: • Committee inquiries and
hearings • Formal consultations with and reports from the
president • Senate advice and consent for presidential nominations and for treaties • House
impeachment proceedings and subsequent Senate trials • House and Senate proceedings under the
25th Amendment if the president becomes disabled or if the office of the
vice president falls vacant • Informal meetings between legislators and executive officials • Congressional membership: each state is allocated a number of seats based on its representation (or ostensible representation, in the case of D.C.) in the House of Representatives. Each state is allocated two senators regardless of its population. , the District of Columbia elects a non-voting representative to the House of Representatives along with American Samoa, the U.S. Virgin Islands, Guam, Puerto Rico, and the Northern Mariana Islands. ==Executive branch==
President includes the office of the
U.S. president, known as the
Oval Office, and the offices of key
presidential advisors and staff.
Executive powers and duties The executive branch is established in
Article Two of the United States Constitution, which
vests executive power in the
president of the United States. The president is both the
head of state (performing ceremonial functions) and the
head of government (the chief executive). The Constitution directs the president to "
take care that the laws be faithfully executed" Legal scholars William P. Marshall and
Saikrishna Prakash write of the Clause: "the President may neither breach federal law nor order their subordinates to do so, for defiance cannot be considered faithful execution. The Constitution also incorporates the English bars on dispensing or suspending the law, with some supposing that the Clause itself prohibits both." Many presidential actions are undertaken via
executive orders,
presidential proclamations, and
presidential memoranda. The president is the
commander-in-chief of the
armed forces. Under the
Reception Clause, the president is empowered to "receive Ambassadors and other public Ministers"; the president has broad authority to conduct foreign relations, is generally considered to have the sole power of
diplomatic recognition, and is the United States' chief diplomat, Article II's
Appointments Clause provides that the president "shall nominate, and by and with the Advice and Consent of the Senate, shall appoint Ambassadors, other public Ministers and Consuls, Judges of the supreme Court, and all other
Officers of the United States" while providing that "Congress may by Law 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." These appointments delegate "by legal authority a portion of the sovereign powers of the federal government." The Constitution grants the president the "Power to
grant Reprieves and Pardons for Offences against the United States, except in Cases of Impeachment"; this
clemency power includes the power to issue absolute or conditional pardons, and to issue
commute sentences, to remit fines, and to issue general
amnesties. The presidential clemency power extends only to federal crimes, and not to state crimes. The president has informal powers beyond their formal powers. For example, the president has major
agenda-setting powers to influence lawmaking and policymaking, and typically has a major role as the
leader of their political party.
Election, succession, and term limits The
president and
vice president are normally elected as
running mates by the
Electoral College; each
state has a number of electoral votes equal to the size of its Congressional delegation (
i.e., its number of Representatives in the House plus its two senators). The
District of Columbia has a number of electoral votes "equal to the whole number of Senators and Representatives in Congress to which the District would be entitled if it were a State, but in no event more than the least populous State". A President may also be seated by
succession. As originally drafted, there was no limit to the time a President could serve, however the Twenty-second Amendment, ratified in 1951, originally limits any president to serving two four-year terms (8 years); the amendment specifically "caps the service of a president at 10 years" by providing that "if a person succeeds to the office of president without election and serves less than two years, he may run for two full terms; otherwise, a person succeeding to office of president can serve no more than a single elected term."
Veto power, impeachment, and other issues , a common
personification of the U.S. federal government, depicted in an early 20th century illustration Under the
Presentment Clause of Article I, a bill that passes both chambers of Congress shall be presented to the president, who may sign the bill into law or
veto the bill by returning it to the chamber where it originated. If the president neither signs nor vetoes a bill "within ten Days (Sundays excepted) after it shall have been presented to him" it becomes a law without the president's signature, "unless the Congress by their Adjournment prevent its Return in which Case it shall not be a Law" (called a
pocket veto). The president may be
impeached by a majority in the House and removed from office by a two-thirds majority in the Senate for "
treason,
bribery, or other
high crimes and misdemeanors". The president may not
dissolve Congress, but has the power to adjourn Congress whenever the House and Senate cannot agree when to adjourn; no president has ever used this power.
Cabinet, executive departments, and agencies Article II, Section 2 of the Constitution sets forth the creation of a presidential Cabinet. The role of the Cabinet is to advise the president and carry out the programs and laws of the federal government. The Cabinet is composed of the vice president and the leaders of 15 executive departments. Those executive departments are the Departments of State, Treasury, Defense, Justice, Interior, Agriculture, Commerce, Labor, Health and Human Services, Housing and Urban Development, Transportation, Energy, Education, Veterans Affairs, and Homeland Security. Additionally, there are seven other members of the Cabinet who are appointed by the president. These are the White House Chief of Staff, Administrator of the Environmental Protection Agency, Director of the Office of Management & Budget, United States Trade Representative, U.S. Ambassador to the United Nations, Chairman of the Council of Economic Advisers, and Administrator of the Small Business Administration. The heads of the 15 departments are chosen by the president and approved with the "advice and consent" of the U.S. Senate. Once confirmed, these "Cabinet secretaries" serve at the pleasure of the president. In addition to the executive departments, a number of staff organizations are grouped into the
Executive Office of the President (EOP), which was created in 1939 by President Franklin D. Roosevelt. The EOP is overseen by the White House Chief of Staff. The EOP includes the
White House staff, the
National Security Council, the
Office of Management and Budget, the
Council of Economic Advisers, the
Council on Environmental Quality, the
Office of the U.S. Trade Representative, the
Office of National Drug Control Policy, and the
Office of Science and Technology Policy. Outside of the EOP and the executive departments are a number of
independent agencies. These include the
United States Postal Service (USPS),
NASA, the
Central Intelligence Agency (CIA), the
Environmental Protection Agency (EPA), and the
United States Agency for International Development (USAID). In addition, there are
government-owned corporations, including the
Federal Deposit Insurance Corporation and the
National Railroad Passenger Corporation. == Judicial branch ==