The Ninth Amendment clarifies that people hold additional rights, not granted by the Constitution

The 10th Amendment affirms that most undelegated powers remain with the states

Adopted to reassure skeptics of an overly powerful federal government, the amendment was meant to curb federal overreach and preserve state control over most everyday governance decisions.

The Tenth Amendment reserves all powers not granted to the federal government to the states or the people

Any powers not delegated to the federal government by the Constitution are reserved to the states or to the people. It has been cited in legal battles over healthcare, marijuana, and environmental regulation.

The First Amendment protects 5 distinct freedoms

Most Americans cite the amendment on free speech, but the First Amendment also protects religion, the press, peaceful assembly, and the right to petition the government—five separate guarantees in a single sentence.

James Madison's original draft of the First Amendment was far more expansive than what was ratified

Madison's first proposed language guaranteed the right "to speak, to write, or to publish" one's sentiments freely—broader and more explicit than the final text—and described the free press as "one of the great bulwarks of liberty."

The Fifth Amendment covers a wide range of legal protections for those accused of a crime

While it is widely known for the right against self-incrimination, the Fifth Amendment also protects against being charged for the same crime twice, requires grand jury indictments for serious crimes, and mandates compensation when the government takes private property for public use.

The Second Amendment protects the right to keep and bear arms

One of the most debated amendments, the Second Amendment has divided courts, lawmakers, and the public for decades. The Supreme Court held in 2008's District of Columbia v. Heller that it protects an individual right. Legal challenges continue today.

The Bill of Rights was not included in the original Constitution

The Constitution was ratified before a formal list of rights was added. To avoid reopening debates, the Founders approved the core document first, then adopted the Bill of Rights as amendments. Watch this video to find out why, and how, that happened.

The man who gave 9 people power over everyone

In the US, nine unelected justices can shape some of the most personal and political parts of our lives. But the Supreme Court wasn't always this powerful. When it was first written into the Constitution, it had no clear authority, no real role, and little public respect.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

The US Constitution has been amended 27 different times since its ratification

Dive deeper into each amendment to the Constitution with resources provided by the National Constitution Center. This website features podcasts, videos, and other web resources for each of the amendments, examining their creation and their impact on today’s political and social landscape.

The 14th Amendment established birthright citizenship and equal protection under law

Ratified in 1868, the 14th Amendment guaranteed citizenship to all people born in the United States and required states to provide equal protection—overturning the Dred Scott decision, which had declared that Black Americans could never be citizens or claim constitutional rights.

The Third Amendment bars the forced housing of soldiers in private homes

The amendment was designed to address a specific grievance of the Colonies and remains the only Bill of Rights provision that has never been directly tested by a Supreme Court ruling on its merits.

Explore the specific authorities granted to Congress: the 'enumerated powers'

The Constitution grants Congress a list of powers—including taxing, regulating interstate commerce, and declaring war—while powers not explicitly listed are reserved to the states or the people, defining the federal government's scope of authority.

Trace how the Bill of Rights, inspired by centuries of political theory, took shape between 1774 and 1789.

The Sixth Amendment guarantees the right to a speedy trial, an impartial jury, and legal counsel

The amendment guarantees robust protections for those accused of crimes. However, states weren't required to provide attorneys for defendants who couldn't afford one until the Supreme Court's 1963 Gideon v. Wainwright ruling—172 years after ratification.

The Eighth Amendment prevents cruel and unusual punishment and was borrowed from England

The exact wording of the amendment came from England's Bill of Rights, written more than a century before America's. Today, the Eighth Amendment governs death penalty standards, prison conditions, and sentencing limits, though its interpretation remains actively contested.

Ben Franklin’s edit helped define the Declaration’s philosophy

When Thomas Jefferson drafted the Declaration, he wrote that its truths were “sacred and undeniable.” Benjamin Franklin urged replacing that phrase with “self-evident,” grounding the document in reason rather than religious authority and sharpening its Enlightenment logic.

The 13th Amendment's criminal exception enabled new forms of forced labor

Southern states exploited the amendment's clause allowing slavery "as punishment for crime" to arrest thousands of Black Americans on minor charges, leasing them to private employers through convict labor systems that persisted for decades.

In 1215, the Magna Carta declared that even the king was not above the law

Forced on King John by rebellious barons, the Magna Carta established limits on royal power and the principle that rulers are subject to law. Discover how this foundational text later influenced the development of constitutional government and modern human rights traditions.

The MLB's reserve clause gave owners rights to players after their contracts expired

The clause was added to contracts in 1879, allowing owners to hang on to players after the expiration of their contracts, sometimes in perpetuity.

The Founders placed the pursuit of happiness at the center of good governance

This podcast explores the central place happiness played in the American founding, highlighting the influence of Greek and Roman moral philosophy on the founders’ constitutional ideas.

The reservation system gives tribes limited self-governance while keeping them under federal control

Federal law designates Native nations as "domestic dependent nations"—a legal category that recognizes limited tribal sovereignty while subordinating tribes to federal authority. This ambiguous status, introduced by Chief Justice John Marshall's 1831 opinion in Cherokee Nation v. Georgia, has shaped conflicts over land and governance ever since.

The 22nd Amendment was a reaction to Roosevelt's four terms

After Franklin D. Roosevelt won four elections, Congress moved to prevent future presidents from holding power indefinitely. Ratified in 1951, the 22nd Amendment set a firm two-term limit as a safeguard against extended presidencies.

What are the universal human rights?

This video outlines what basic human rights are, who gets to pick them, who enforces them, and how. The basic idea of human rights states that each of us is entitled to the same basic rights and freedoms, no matter who we are or where we are born....

Some opponents of Title IX wanted exemptions for revenue-producing sports

One of the main arguments against Title IX was that it would unfairly punish revenue-generating sports like football and men’s basketball. Senator John Tower (R-TX) proposed exempting those sports from Title IX’s reach. His amendment failed, but the push for a similar modification to the law continued through the decades.

Adams' famous 1776 letter urged the Founders to 'remember the ladies'

In a March 1776 letter to John, Adams urged the Founders not to grant husbands unchecked power over their wives. Historians note it was not a demand for suffrage but a challenge to coverture—the legal doctrine that denied a married woman an independent identity.

Constitutional originalism and living constitutionalism are the 2 main theories of interpretation

Hear from experts about originalism—the view that the Constitution should be interpreted according to its original public meaning—alongside its main counter-ideology, living constitutionalism, which argues that the document's meaning should evolve with changing social and legal norms.

Despite being favored by 87% of Americans, Congress does not have term limits.

The original copy of the Declaration of Independence is not a pristine document, and even features a smudged anonymous handprint in the bottom left corner.

The story of Dollree Mapp, whose legal challenge over her 1957 conviction for possessing "obscene material" led to a major strengthening of the Fourth Amendment

The rivalry between Alexander Hamilton and Thomas Jefferson centered on federalism—the question of how much power the federal government should hold relative to the states.

Learn how to read a prospectus, the juicy document that any company must file with the SEC before going public.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

Famed poet TS Eliot rejected the manuscript for George Orwell's political fable 'Animal Farm,' writing that its criticism of authoritarianism was not 'the right point of view.'

Recent research found that the brain doesn't seem to massively rewire following amputation—upending earlier beliefs about the cause of phantom limb pain.

Lesser-known phobias include turophobia, or the fear of cheese, and nomophobia, the fear of being without your cell phone.

While atoms are normally made of protons, neutrons, and electrons, exotic ones have been built with antimatter—alternate versions of normal matter that live for fractions of a second and are about a billion times as rare.

The first line of 'immortal' human cells, which can divide indefinitely and are used in scientific research, was nonconsensually taken from a Black woman.

The 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

In 2026, Finland was named the world's happiest country for the ninth consecutive year based on its wealth, social safety network, and high life expectancy, among other factors.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

SpongeBob exemplifies Aristotle's philosophy for living well because he understands that happiness doesn't come from external factors like money, recognition, or power.

Calculate how much of your tax dollars go to each federal program based on your income, filing status, and number of children

After NASA's Voyager 1 captured Earth as a single pixel as it left the solar system in 1990, astronomer Carl Sagan used the image to reflect on humanity's fragility and the responsibility to protect 'the only world we've ever known.'

A small portion of The Winstons' 'Amen, Brother,' an obscure '60s gospel record, is the basis for thousands of hip-hop tracks, making it one of the most sampled records ever that's informally known as 'the Amen break.'

The identity of the Tank Man in the iconic photo from the 1989 Tiananmen Square protests remains unknown and was possibly killed.

Corals are themselves not coral reefs—the term refers to the tiny marine invertebrates that build the rigid reef.

'Silent' fireworks have gained more interest in recent years as a quieter celebratory option.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.