President Andrew Johnson was mainly impeached for obstructing Reconstruction

Presidents can be impeached for 'treason, bribery, or other high crimes and misdemeanors'

The Constitution empowers the House to impeach a president by a majority vote and the Senate to convict by a two-thirds vote. Three presidents—Andrew Johnson, Bill Clinton, and Donald Trump (twice)—were impeached, though none were removed from office.

'Presidential Reconstruction' attempted rapid reunification with minimal federal oversight

Led by Andrew Johnson after Lincoln's death, Presidential Reconstruction (1865-67) quickly restored Southern governments through mass pardons and lenient terms, allowing ex-Confederates to regain power and pass Black Codes that restricted freedpeople's rights.

Donald Trump was impeached in 2019 for abuse of power and obstruction of Congress

The House charged President Trump with pressuring Ukraine to investigate political rival Joe Biden while withholding military aid. The Senate acquitted him in February 2020, with only one Republican voting to convict.

Radical Reconstruction began in response to the lenient policies of Andrew Johnson

In 1867, Congress passed the Reconstruction Acts—overriding Johnson's vetoes—placing the South under military rule and requiring new state constitutions, Black male suffrage, and ratification of the 14th Amendment before readmission.

Andrew Jackson reshaped the presidency and expanded executive authority

Andrew Jackson used the veto extensively, removed federal deposits from the national bank, and asserted the president's right to act independently of Congress—shifting the balance of power toward the executive branch.

Bill Clinton was impeached in 1998 for perjury and obstruction of justice

The House impeached President Bill Clinton over charges related to his affair with White House intern Monica Lewinsky. The Senate acquitted him on both counts in 1999, allowing him to finish his second term in office.

The election of 1868 cemented power and support for Radical Reconstruction

In the first presidential election after the Civil War, Republican Ulysses S. Grant defeated Democrat Horatio Seymour. President Andrew Johnson, deeply unpopular with both parties, was denied renomination. Grant's victory reflected Northern support for Reconstruction.

Andrew Jackson was the first and only president to eliminate the national debt

After Jackson slashed spending and began selling federal land, the government was accumulating more money than it was spending. The situation was unprecedented, but it didn’t last. Too much money was being printed and land prices rose to unsustainable levels. Within a year, the economy tumbled into a depression.

Ford became the first and only president to pardon his predecessor

President Gerald Ford issued a "full, free, and absolute" pardon to Nixon on Sept. 8, 1974, covering any crimes committed between Jan. 20, 1969, and his resignation—effectively ending legal proceedings and making Nixon the first president ever pardoned by his successor.

Abraham Lincoln's victory in 1860 sparked Southern secession—even before his inauguration

Abraham Lincoln's election on an antislavery expansion platform convinced many Southerners that their way of life was under threat. Within three months, seven states seceded from the Union—forming the Confederacy—before Lincoln took office in March 1861.

The Indian Removal Act of 1830 forcibly displaced tens of thousands of Native Americans

Signed by President Andrew Jackson, the act authorized the federal government to negotiate treaties relocating Native nations from their Southeastern homelands to lands west of the Mississippi, often by force.

The nullification crisis tested whether states could defy federal law

In the 1830s, South Carolina declared federal tariffs void within its borders. President Andrew Jackson threatened military force, Congress passed a compromise tariff, and the episode ended with federal authority prevailing over state nullification.

Hamilton's endorsement helped win Jefferson the presidency

In the 1800 presidential election, neither candidate won a majority in the Electoral College, sending the decision to the House of Representatives. After 36 failed votes, Alexander Hamilton lobbied for his ideological rival, Thomas Jefferson, over Aaron Burr, helping break the deadlock.

The 25th Amendment clarified presidential succession and disability after JFK's assassination

Ratified in 1967, the 25th Amendment established procedures for replacing a vice president and transferring power when a president is incapacitated. It was designed to prevent leadership crises like those exposed after President Kennedy's death.

Woodrow Wilson revived the in-person State of the Union in 1913

President Wilson became the first president since John Adams to deliver the State of the Union in person. He is credited with transforming the speech from a routine update into a public tool for advancing the president's legislative agenda.

In his 1859 annual message to Congress, President Buchanan articulated a narrow view of presidential military authority

Buchanan argued that the president lacked constitutional authority to launch offensive military action without congressional approval, a view that reflected the prevailing interpretation of executive war powers throughout much of the nineteenth century.

Cases during John Marshall's tenure defined the principles of federal Indian law

During Marshall's tenure, three landmark rulings—Johnson v. M'Intosh, Cherokee Nation v. Georgia, and Worcester v. Georgia—established foundational doctrines of federal Indian law, defining tribal sovereignty, limiting state authority, and placing primary responsibility for Native affairs in the federal government.

The Oval Office was completed in 1909

Completed during William Howard Taft's presidency, the Oval Office was designed as part of an expansion of the West Wing. President Franklin D. Roosevelt redesigned the room and moved it to the southeast corner of the West Wing in 1934.

The White House was burned by British forces during the War of 1812

On August 24, 1814, British troops invaded Washington, DC, and set fire to the President's House, destroying its interior and roof. However, the exterior sandstone walls survived. After the war, reconstruction began under the original architect.

The 1965 Immigration and Nationality Act abolished national-origin quotas and transformed the demographics of America

Following decades of citizens pressing for reform, President Johnson signed legislation abolishing national-origin quotas, enabling increased immigration from Asia and Africa. The LBJ Presidential Library features photos, videos, audio clips, and text from the 1965 signing ceremony.

The Lincoln Memorial was almost never built

The Memorial faced years of opposition from Speaker of the House Joseph Gurney Cannon, who blocked it for nearly a decade, arguing that the swampy land west of the Mall was an unfit and undignified site to honor Lincoln.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

All US presidents, by generation

Every president is a member of a generation, and Baby Boomers have held the Oval Office since 1992 (with the exception of Joe Biden, of the Silent Generation). But what about in the early days? Turns out the generation with the most presidents is the Transcendental Generation (born between 1792-1821), which includes Abraham Lincoln. Check out the full list (and what are most likely very new generational terms) with this fun overview.

Adams was so involved as first lady that some nicknamed her 'Mrs. President'

As first lady, Adams took an active role in her husband's presidency—advising on appointments, critiquing his speeches, and corresponding extensively with politicians. She supported the controversial Alien and Sedition Acts and pressed for war with France during the XYZ Affair.

Ulysses S. Grant unsuccessfully attempted to run for a third term in 1880

After serving two terms from 1869 to 1877, Grant sought the Republican nomination again in 1880. Though he led the early convention ballots, party opposition blocked him, and James A. Garfield ultimately emerged as the nominee.

Congressional turnover was far more common in the early republic

Many early lawmakers served just one or two terms before stepping aside, reflecting the ideal of the citizen legislator and the discomforts of living in Washington, DC. Longer careers in Congress became typical only later in the 19th century.

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

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.

Before the current East Wing ballroom project, only two White House renovations in the past 100 years cost more than $10M.

See 33 images that became central to huge scandals, including a young Charles and Camilla, Michael Jackson's baby on a hotel balcony, and Hugh Grant's mugshot.

Mark Twain spent decades feuding with the US Postal Service, convinced its costs and regulations were bureaucratic overreach.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

Jimmy Carter signed a 1978 bill that legalized home brewing, a move credited with kick-starting the craft beer industry.

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.

The United States has had a tumultuous relationship with Cuba since its 1959 revolution, highlighted by a nuclear crisis and a decades-long trade embargo.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

Legendary architect Frank Lloyd Wright designed the SC Johnson headquarters in Wisconsin, aiming to make a cathedral-like workplace

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

Many legends about George Washington, including his supposed wooden teeth and the story of cutting down the cherry tree, lack evidence.

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.

Roughly 43 million US borrowers owe roughly $1.7T in student debt, the second-largest source of consumer debt behind mortgages.

View the ten deadliest tornadoes in US history.

Watch a 1934 short film starring jazz legend Cab Calloway, a major figure in the Harlem Renaissance's music scene

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 its famous catalog, Sears sold $600 DIY house kits from 1908 through the 1940s, resulting in an estimated 100,000 'Sears and Roebuck homes.'

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

The Beatles' US label rejected the band's first two singles, 'Please Please Me' and 'From Me to You,' with one executive calling the band 'dead in the water.'

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.

Learn how monoclonal antibodies, which mimic the body's antibodies, can fight diseases like Ebola.