A Blueprint Under Test

Both of America's founding texts were written in the same building: the Pennsylvania State House in Philadelphia, now called Independence Hall.² The first, the Declaration of Independence, dated July 4, 1776, announced that the thirteen colonies were breaking with Britain. Its most famous line claims that "all men are created equal" and have rights to "Life, Liberty and the pursuit of Happiness," and that governments get their power "from the consent of the governed."²⁸

The second came eleven years later. The first national government, under the Articles of Confederation, was too weak to raise money or settle disputes between states. From May 25 to September 17, 1787, a convention met to fix it. Seventy-four delegates were appointed, 55 took part, and Rhode Island sent no one. George Washington was elected unanimously to preside.²

Instead of patching the old system, the delegates wrote a new one. The result is short: 4,543 words including signatures, about half an hour of reading.¹ It took legal force on June 21, 1788, when New Hampshire became the ninth state to ratify it, and the new government began work in 1789.¹

Is it really the oldest? It depends on the definition. San Marino governs itself through written laws going back to 1600, and Britain has an uncodified constitution built from statutes and customs. But as a single written charter for a whole nation, the US Constitution is the oldest still in use.³

The framers feared two things at once: a government too weak to function and one strong enough to become a tyranny. Their answer was to split power in two directions.

First, they divided the national government into three branches. Congress writes laws and controls spending, the president carries out the laws and commands the military, and the courts decide cases under the law. Each branch can block the others: the president can veto bills, Congress can override a veto and must approve treaties and top appointments, and judges can strike down laws that break the Constitution.

The biggest fight at the convention was over representation. Large states wanted seats based on population; small states wanted equal votes. The Great Compromise gave them both: a House of Representatives based on population and a Senate with equal representation for every state.²

Second, they shared power between the national government and the states, a system called federalism. States still run most elections, schools, police and courts. That lets states try different policies, but it also meant that for generations some states could deny rights that the Constitution promised on paper.

The system is slow on purpose. A new law needs the agreement of both chambers and the president, or large majorities to override a veto. Supporters say this protects minorities and forces compromise; critics say it can leave urgent problems unsolved for years.

• Legislative: Congress, with a House and a Senate
• Executive: the president, elected every four years
• Judicial: the Supreme Court and federal courts, whose judges serve for life on good behaviour
• Amendments: changes need two-thirds of both houses of Congress and ratification by three-quarters of the states, which is why there have been only 27

Several states ratified the Constitution only after being promised a list of rights, and Virginia and New York approved it by narrow margins.² James Madison, who had drafted the Virginia Plan that framed the convention's debates, took up the task.²³ In September 1789 Congress sent twelve amendments to the states. Ten were ratified, and they took effect on December 15, 1791.⁴

The First Amendment protects freedom of religion, speech and the press, the right to assemble and protest, and the right to ask the government to fix problems.⁵ Other amendments protect the right to a fair trial, protect people against unreasonable searches and bar cruel and unusual punishments. The rights are written as limits on government: "Congress shall make no law..."

The courts became the main guardians of those limits. The Supreme Court held its first session on February 2, 1790.¹ Over time its rulings turned short phrases such as "freedom of the press" into detailed legal protections.

Protections on paper still depend on practice. In its 2026 World Press Freedom Index, Reporters Without Borders ranked the United States 64th of 180 countries, down seven places. It pointed to hostile official rhetoric toward journalists, police violence against reporters and deep cuts at the agency that runs Voice of America and Radio Free Europe.¹⁴

"All men are created equal" was written by men who, in many cases, held other people in slavery. Closing that gap took a civil war and a century of struggle. President Abraham Lincoln's Emancipation Proclamation of January 1, 1863, declared enslaved people in the rebelling states free and opened the Union Army and Navy to Black men; nearly 200,000 served by the war's end.⁷

Three amendments then rewrote the Constitution. The 13th (1865) abolished slavery, the 14th (1868) made everyone born in the country a citizen and promised "equal protection of the laws," and the 15th (1870) banned denying the vote because of race.⁶ Women won a nationwide right to vote with the 19th Amendment in 1920.⁶

Promises on paper were not enough. Across much of the South, literacy tests, poll taxes and violence kept Black citizens from voting for another hundred years. The civil rights movement forced change. The Civil Rights Act of 1964, signed on July 2, banned segregation in restaurants, hotels and other public places and outlawed job discrimination.⁸ The Voting Rights Act, signed on August 6, 1965, banned literacy tests and required places with a record of discrimination to get federal approval before changing voting rules.⁹

The 24th Amendment (1964) ended poll taxes in federal elections, and the 26th (1971) lowered the voting age to 18.⁶ Each step added millions of people to the electorate, which is one reason turnout figures over time must be read carefully.

This chart shows the share of eligible citizens who voted in each national election since 1900. "Eligible" means adult citizens who are legally allowed to vote, so the measure adjusts for non-citizens and, where possible, people barred for felony convictions.

Turnout was highest in the late 1800s, then fell in the early 1900s. The low points of 1920 and 1924 came right after the 19th Amendment added millions of women to the eligible population.¹⁵⁶

In 2020, 66.4% of eligible citizens voted, the highest presidential turnout since 1900; in 2024 the figure was 64.3%.¹⁵ Turnout in midterm elections, when there is no presidential race, is usually 10 to 20 points lower.¹⁵

A similar dip followed the 26th Amendment. Turnout fell from 62.5% in 1968 to 56.2% in 1972, the first presidential election in which 18- to 20-year-olds could vote nationwide.¹⁵⁶

It is often said that most of the world's constitutions copied America's. The evidence is more mixed. Written constitutions, separate branches, judicial review and bills of rights did spread widely, and the US example was an early model. But a study by law professors David Law and Mila Versteeg, covering sixty years of the world's constitutions, found that in recent decades other countries have become less likely to copy either the rights or the structure of the US Constitution.¹⁰

They found that most modern constitutions share a common set of rights, and that the US Constitution sits increasingly far from that mainstream. Its influence was strongest among other common-law countries, and newer documents such as Canada's 1982 Charter of Rights and Freedoms have become models of their own.¹⁰

The clearer US mark is on the rules of the international system. In 1945 delegates from 50 countries met in San Francisco and signed the United Nations Charter, which took effect on October 24, 1945.¹¹ Three years later, the UN General Assembly adopted the Universal Declaration of Human Rights in Paris on December 10, 1948, with eight abstentions and no votes against. Eleanor Roosevelt, the US delegate who chaired the UN Commission on Human Rights, was recognised as the driving force behind it.¹²

During the Cold War the US also funded efforts to support democracy abroad. After President Ronald Reagan called in 1982 for helping to build "the infrastructure of democracy," Congress created the National Endowment for Democracy in 1983. It says it has supported democratic activists in more than 130 countries.¹³

The record has another side. In 1953 the CIA helped overthrow Iran's elected prime minister, Mohammad Mossadegh, and the agency formally acknowledged its role in documents released in 2013.¹⁹ In Chile, the CIA tried to provoke a coup in 1970 to stop Salvador Allende from taking office; it did not instigate the 1973 coup that brought General Augusto Pinochet to power, but it knew of the plotting and later supported the military government.²⁰ Critics abroad often point to such cases when US leaders speak about democracy.

Several research groups rate democracies every year. The Economist Intelligence Unit (EIU) scores 167 countries from 0 to 10, looking at elections, how government works, political participation, political culture and civil liberties. Here is how the United States compares with other large democracies in the 2025 edition.

The EIU classes the US as a "flawed democracy." Its score fell from 7.85 to 7.65 in 2025, the lowest since the index began, and its rank dropped from 28th to 34th.¹⁶¹⁷ Norway ranked first; the global average was 5.19.¹⁶

Other indices point the same way. The V-Dem Institute's liberal democracy score for the US fell from 0.75 in 2024 to 0.57 in 2025, its lowest level since 1965, and Freedom House cut its US rating from 84 to 81 out of 100.¹⁷ These ratings rely partly on expert judgement, and some Americans reject them as politically biased, but the direction of change is consistent across groups using different methods.

Americans themselves are uneasy. In early 2026, 69% said they were dissatisfied with the way democracy is working, with Democrats (86%) far more unhappy than Republicans (51%).¹⁷