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

Watch 2 Supreme Court justices debate how the Constitution should be interpreted

In a 2009 conversation, former Justices Antonin Scalia and Stephen G. Breyer lay out competing approaches to constitutional interpretation: Scalia's textualist, strict constructionism versus Breyer's evolutionary view of the Constitution in practice.

Debating the Constitution today

The Constitution continues to shape our political and social life today. If you want to understand how today’s political debates connect to the Constitution, check out this podcast from the National Constitution Center. The weekly program features experts from diverse perspectives and explores how constitutional principles shape modern issues.

Read through the actual text of the US Constitution

This helpful guide from the US Congress includes annotations that provide valuable insights into the background, crafting, and legacy of each article in the document. Additionally, the resource offers accessible legal analysis and interpretations.

Read the Federalist Papers—the essays that defended the proposed Constitution

Written between 1787 and 1788, the Federalist Papers—85 essays by Alexander Hamilton, James Madison, and John Jay—defended the Constitution and articulated the logic of federalism. They remain a key guide to the original interpretation of the Constitution.

Take a deep dive into the constitutional foundations of judicial review

In this episode of "This Constitution," the hosts take a law-focused approach to judicial review—examining its roots in Article III and the supremacy clause, its development through Marbury v. Madison, and the ongoing constitutional debates about whether the court's power strengthens or strains American democracy.

Explore the world's oldest constitutions

The 1789 US Constitution remains the oldest active written national constitution. Older systems exist—such as San Marino’s statutes or the Magna Carta—but they are not single, codified constitutions. See how other countries compare in this visualization.

The US framework of government has influenced the constitutions of many other countries

In 1787, the US Constitution introduced a system built on the separation of powers and individual liberties, including freedom of speech and religion. Though widely influential, its rigidity has made it less of a modern model as countries adopt more adaptable constitutional frameworks.

The Constitution included compromises that still shape the US today

The creation of the Constitution necessitated numerous compromises to accommodate the diverse interests of the states. The significant compromises included resolutions on debates over representation in Congress and the status of enslaved individuals.

Read the majority opinion that established judicial review

In his opinion in Marbury v. Madison, Chief Justice John Marshall argued that a written constitution is "paramount law" and that courts must refuse to enforce statutes that conflict with it. He declared that "it is emphatically the province and duty of the Judicial Department to say what the law is."

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

This interactive tool from the National Constitution Center allows you to compare constitutional rights globally, highlighting which countries have adopted protections similar to those in the US Constitution—and how shared principles manifest in different legal forms around the world.

In the US, any court can rule on constitutionality—unlike in most other countries

In the American system, known as diffuse judicial review, federal and state courts at every level may assess whether laws comply with the Constitution, and their decisions are ultimately reviewable by the Supreme Court. Many other democracies, by contrast, reserve constitutional review to specialized constitutional courts.

Hear about the individuals who have reshaped the Constitution throughout American history

This multi-episode podcast series from The Washington Post explores how debates, court decisions, and influential individuals have shaped the Constitution as Americans pushed the nation to live up to its founding ideals.

Federalist 10 argued that a large republic best protects liberty

In Federalist 10, James Madison argued that a broad federal government could better control factions than small states (like classical city-states in ancient Greece). This foundational text in American political thought reframed the Constitution as a solution to political division rather than a threat to self-government.

Courts referee federalism disputes between Congress and the states

Modern federalism is primarily worked out through litigation. The Supreme Court decides disputes in written opinions that explain when federal law preempts state authority, how far Congress's powers extend, and when states may resist.

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

This interactive resource from the National Constitution Center traces the complex drafting process behind the Bill of Rights, showing how state proposals and revisions evolved into the first 10 amendments.

Explore the most impactful Supreme Court cases in US history

Browse by constitutional topic to explore key rulings, their historical impact, and the legal principles they established. Each case includes a summary of the decision, along with notable excerpts from majority and dissenting opinions.

Hear leading experts on constitutional law discuss the legacy and impact of Marshall

In this podcast, constitutional scholars Michael Gerhardt (University of North Carolina) and Kevin Walsh (University of Richmond) analyze Marshall's 34-year tenure, assessing his role in establishing judicial review, expanding federal power, and shaping the court's institutional authority.

John Marshall advanced federal supremacy and judicial review

Marshall's jurisprudence emphasized that the Constitution is the supreme law of the land, enforceable by an independent judiciary. Through his court's decisions, he affirmed judicial review, broad implied powers for Congress, and federal authority to override conflicting state laws.

Explore the nearly 1,000 laws, regulations, and provisions the court has held unconstitutional since Marbury v. Madison

Over more than two centuries, the Supreme Court has struck down nearly 1,000 federal, state, and local measures—exercising its authority to invalidate laws that conflict with the Constitution and shaping civil rights, the separation of powers, and the scope of government authority.

Hear how the 2 religious clauses in the First Amendment have been tested and evolved over time

This podcast examines the evolution of the free exercise and establishment clauses, tracing their development from federal restrictions to state and local laws. Discover the believers who challenged the limits of religious freedom throughout American history.

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.

Watch scholars debate Supreme Court term limits

In a debate from 2017, legal scholars from across the political spectrum spar over whether justices should serve fixed terms. The discussion highlights bipartisan concerns about judicial independence, accountability, and the risks of lifetime tenure.

Amending the Constitution requires broad support

The framers created a demanding amendment process. Proposed changes require two-thirds approval in both houses of Congress and ratification by three-fourths of the state legislatures, making sure that constitutional amendments reflect a broad national consensus rather than temporary political majorities.

Thomas Jefferson and John Marshall clashed over national power and states' rights

Distant cousins Jefferson and Marshall advanced opposing constitutional visions—Jefferson favoring states' rights and local majorities, while Marshall defended broad federal authority and judicial review. Through decisions such as McCulloch v. Maryland, Marshall advanced national supremacy over state resistance.

America’s founding documents were once housed in other government buildings

Today, the Constitution and Declaration are displayed at the National Archives. Still, for more than a century, they were kept by other federal institutions—including the State Department and the Library of Congress—before gaining a permanent home in the 1930s.

Read the language in the Constitution that protects religious freedom in the US

The First Amendment's religion clauses include two provisions: the establishment clause and the free exercise clause. These two parts prevent the government from endorsing any specific religion and from interfering with the free practice of religion.

The necessary and proper clause of the Constitution allows Congress flexibility in governing

The Constitution authorizes Congress to pass laws needed to carry out its enumerated powers, which, over time, have become one of the Constitution's most powerful sources of federal authority.

The Founders were split on term limits during the Constitutional Convention

At the Constitutional Convention, delegates debated whether to mandate term limits. In letters, Jefferson warned that indefinite service could entrench power, while Madison argued that regular elections—not forced turnover—were the best safeguard against abuse.

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."

See the documents that shaped the Declaration before it was written

This Library of Congress collection comprises early arguments for Colonial rights, protests against British authority, draft constitutions, and multiple working drafts of the Declaration of Independence. It traces the ideas and language that preceded the final document adopted in 1776.

Surprises you may not know about the US Constitution

This article offers intriguing and lesser known insights into the creation and content of the US Constitution. Examples include that Rhode Island disliked the Constitution so much that it almost started a civil war and that Ben Franklin was so ill he needed to be carried into the Constitutional Convention in a sedan chair.

The framers of the Constitution designed the amendment process to be difficult

Amending the Constitution requires substantial and widespread public support. Since 1879, more than 10,000 amendments have been proposed—many repeatedly—ranging from banning flag burning to repealing the income tax. This resource highlights some of the most notable failures.

The political theory of Henry David Thoreau

The two years, two months, and two days that Thoreau spent living in a modest cabin at Walden Pond informed his beliefs that people should live simply, deliberately, and become self-reliant. Those beliefs were later articulated, in a political sense, in his landmark essay, "Civil Disobedience."

Madison's meticulous notes of the Constitutional Convention are the most thorough record of the event

During the Constitutional Convention, James Madison took detailed daily notes of the debates, speeches, and votes. His Notes on the Debates in the Federal Convention is the most comprehensive and authoritative account of the convention, shaping historians' understanding of the Constitution's origins.

Dive deep into Madison's role in promoting the Constitution through the Federalist Papers

James Madison used the Federalist Papers to shape ratification debates, explain the Constitution's design, and argue that a large republic could safeguard liberty. This podcast explores his pivotal role in the ratification of the Constitution.

The Constitution is difficult to amend

Amended just 27 times in more than 230 years, the US Constitution is deliberately hard to change. This animated video from TED-Ed explains why the amendment process is so complex and what that rigidity means in practice.

The 1787 Constitutional Convention was initially called to amend the Articles of Confederation

Delegates initially met in 1787 to amend the Articles of Confederation, but within weeks chose to redesign the government entirely. Months of intense debate over power and representation produced the compromises that shaped the Constitution.

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 Constitution grants Congress more powers than the president

Article I outlines detailed congressional powers—taxation, spending, war declarations, and lawmaking—while Article II gives the president limited, broadly defined authority. This design reflects the framers' intention to prevent executive overreach.

The Bill of Rights spent more than a century largely ignored by the courts

When ratified in 1791, the Bill of Rights applied only to the federal government, which exercised little direct control over daily life. It played a limited role in early constitutional law until the 20th century, when legal advocates began using it to challenge state and local laws.

The debate over federalism helped produce the novel character of the United States

During ratification, Federalists argued that a strong national government was essential for national survival. Anti-Federalists warned that it could overwhelm states and threaten individual liberty—forcing compromises that shaped early American federalism and led to the adoption of the Bill of Rights.

Critics argued Hamilton prioritized central power over popular sovereignty

This podcast examines Hamilton's belief in expansive federal power and why he was repeatedly labeled a monarchist—tracing how his calls for a strong executive, his life-tenure proposals at the Constitutional Convention, and his admiration for British stability fueled accusations that he favored centralized power over republican rule.

Early American citizenship was defined inconsistently by individual states.

A court designed to be the least powerful branch of government became one of the most influential institutions in America.

Justice Oliver Wendell Holmes championed the idea of speech as a 'marketplace of ideas'

In his landmark dissent in Abrams v. United States, Justice Holmes argued that the best way to combat harmful ideas is through open competition—a principle that became foundational to modern First Amendment law.

Federalist 51 argues that liberty could be protected within the national government

In Federalist 51, James Madison wrote that separating powers and pitting their ambitions against one another would restrain federal overreach from within, reducing reliance on state resistance as the sole check on national authority.

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.

Existentialism is a loosely defined philosophy that encouraged authentic living

The writers and thinkers often characterized as “existentialist” sometimes contradict one another. Considering that, boiling the philosophy down to a set of tenets can be difficult. Generally, those associated with existentialism were inspired by the 19th-century works of Søren Kierkegaard and Friedrich Nietzsche, and they believed that individuals needed to defy conformity and define the meaning of life for themselves.

The United States is the world's oldest continuously operating federal system under a written constitution

The US pioneered federalism in the late 18th century, and many countries later adopted federal systems to manage conflict and share power. This resource features interactive maps that trace the spread of federal systems worldwide from 1900 to the present.

The powers of the judicial branch have expanded since the nation's founding

Initially, the Supreme Court was seen as the weakest branch, lacking "the power of the sword or the purse," as Alexander Hamilton noted in *Federalist No. 78*. This podcast explores the political conflicts and pivotal decisions that transformed the court into the powerful constitutional authority it is today.