The Constitution is shorter than most software license agreements — about 4,500 words in its original form — yet it is the operating system of American government. This tour walks through its seven articles and its amendments in plain language, so the document behind every Supreme Court headline stops feeling like a mystery.
The structure: seven articles
The original Constitution is organized into seven articles. The first three build the three branches of government; the rest handle the machinery that holds the system together.
- Article I — CongressCreates the legislative branch and lists its powers: taxing, spending, borrowing, regulating commerce, and declaring war. It is the longest article, a sign of how central Congress was meant to be.
- Article II — the PresidencyCreates the executive branch, sets the President’s powers and the path to office, and provides for impeachment.
- Article III — the courtsCreates the Supreme Court and authorizes the federal judiciary; defines treason narrowly.
- Article IV — the statesGoverns relations among states — full faith and credit, and the admission of new states.
- Article V — amendmentsLays out how the Constitution can be changed — deliberately difficult.
- Article VI — supremacyMakes the Constitution and federal law the "supreme Law of the Land."
- Article VII — ratificationSet the terms by which the original states adopted the document.
The Bill of Rights
Several states would only ratify the Constitution on the promise of explicit protections for individuals. The result was the Bill of Rights — the first ten amendments, added in 1791. They include free speech, religion, and assembly (First), the right to bear arms (Second), protection against unreasonable search and seizure (Fourth), due process and protection against self-incrimination (Fifth), and the right to a fair trial (Sixth).
The Ninth and Tenth Amendments are the quiet workhorses: they make clear that rights not listed still exist, and that powers not given to the federal government are reserved to the states and the people.
A living document: later amendments
Beyond the first ten, 17 more amendments have reshaped the country — abolishing slavery (13th), guaranteeing equal protection and due process from the states (14th), extending the vote to Black Americans (15th), women (19th), and 18-year-olds (26th), and creating the federal income tax (16th).
Amending is hard on purpose: an amendment needs two-thirds of both chambers of Congress (or a convention) to propose it and three-quarters of the states to ratify. That high bar is why the Constitution has been amended only 27 times in more than two centuries.
Why a 1787 document still decides modern fights
Because federal law and executive action must conform to the Constitution, its words are the final ruler in the biggest legal disputes — from free speech online to the limits of presidential power. When the Supreme Court strikes something down, it is measuring a modern statute against this 18th-century text.
Frequently asked questions
How many articles and amendments does the Constitution have?
Seven original articles and 27 amendments. The first ten amendments are the Bill of Rights, ratified in 1791.
How is the Constitution amended?
An amendment must be proposed by a two-thirds vote of both chambers of Congress (or a national convention) and then ratified by three-quarters of the states — currently 38 of 50.
What is the supremacy clause?
Found in Article VI, it makes the Constitution and federal law the "supreme Law of the Land," meaning they override conflicting state laws.