Interracial and same-sex marriages have both been illegal at certain times during US history

A timeline of US immigration laws

The United States began regulating immigration soon after it won independence from Great Britain, and the laws since enacted have reflected the politics and migrant flows of the times. Here's a timeline of key immigration laws from 1790 to 2014, according to the Pew Research Center.

Plessy v. Ferguson legalized segregation until Brown v. Board of Education overturned it

In 1896, the Supreme Court upheld racial segregation under the "separate but equal" doctrine, enabling decades of discrimination. This explainer traces how Brown later ruled school segregation unconstitutional and reshaped civil rights law.

Around the world, marriage plays an important role in bolstering social stability

Marriage was around in one form or another long before written history. From bonds between two people to large polyamorous gatherings of spouses, the rich history of marriage practices demonstrates that partnerships have been, and will likely continue to be, incredibly diverse.

More than 2,000 Black Americans were victims of racial terror lynchings from 1865 to 1876

The Equal Justice Initiative documented over 2,000 lynchings of Black people during Reconstruction—violence that attempted to restore white supremacy, suppress Black political power, and terrorize communities in the aftermath of emancipation.

The Civil Rights Act of 1964 outlawed segregation and discrimination nationwide

The Civil Rights Act, signed into law in 1964, prohibited racial segregation in public accommodations and ended discrimination based on race, color, religion, sex, and national origin in employment, while also strengthening protections in education. It established protections enforced across federally funded programs.

The Dred Scott decision denied citizenship to people of African descent

In 1857, the Supreme Court ruled in Dred Scott v. Sandford that Black Americans could not be US citizens. The decision heightened an already brewing conflict and became a key factor in pushing the nation toward civil war.

Two-spirit relationships and identities

Queer relationships and transgender people aren’t new. Even though gay marriage has been legalized fairly recently in Western countries, people all over the world have engaged in relationships beyond heterosexuality throughout the centuries. Although contemporary tribes have various views around homosexuality, there are numerous examples of queer relationships within indigenous traditions across what is now called the Americas.

Creating Martin Luther King Jr. Day took 15 years of political advocacy

After Dr. King’s assassination, activists—including his wife Coretta Scott King—spent 15 years pushing Congress to create a federal holiday in his honor, facing repeated resistance before it was finally signed into law in 1983.

The story of Opal Lee, 'grandmother' of Juneteenth

Opal Lee, an activist from Texas, is considered one of the major reasons Juneteenth is now an official federal US holiday. In 2016, Lee walked from Fort Worth, Texas, all the way to Washington, DC, to garner support for the cause of making the day an official national holiday. Read about her experience and victory in this brief overview of her role in the creation of the holiday.

Divorces in the US have been steadily declining over the past few decades

Despite these recent declines, divorce rates in the US remain between 40% and 50%. But there’s some nuance to those numbers. For instance, having a college degree makes individuals 30% less likely to divorce than those without one. People who attend church are also less likely to divorce. And prenuptial agreements are considerably likely to prevent contentious court battles.

A comprehensive state-by-state report of LGBTQ+ rights in America

The State Equality Index (SEI) is a comprehensive state-by-state report that provides a review of statewide laws and policies that affect LGBTQ+ people and their families. The SEI rates all 50 states plus Washington, D.C. in six areas of law. Each...

The Supreme Court extended the ban on discriminatory jury strikes to include gender in 1994

In J.E.B. v. Alabama, the court ruled 6-3 that using peremptory challenges to exclude jurors based on sex violates the Equal Protection Clause, building on its 1986 Batson decision banning race-based strikes.

In 1978, lower courts ruled that neo-Nazis had the right to march through Skokie, Illinois

Skokie was home to a large community of Holocaust survivors, making the planned march an extreme test of First Amendment principles. The courts ultimately ruled that even deeply offensive speech remains protected by the Constitution.

More than 5,000 marchers joined the 1913 Woman Suffrage Parade on the National Mall

On March 3, 1913—the day before Woodrow Wilson's inauguration—suffragists marched through Washington, DC. The parade drew large crowds, exposed violent opposition to women's suffrage, and helped galvanize support for the 19th Amendment.

Timeline of women in labor history

In 1866, newly freed black women working as laundresses in Jackson, Mississippi, formed a union and went on strike for higher wages. But it wasn't until 1974, that the Coalition of Labor Union Women was founded as America's only national organization for union women. Want to find out more about the history of women in the labor movement? Click here for the full timeline.

'What each of us must come to realize is that our intent always comes through.'

- First African American Supreme Court justice Thurgood Marshall (1908-1993)

IVF is legal across America, but some worry that state bans could curtail this reproductive technology

This reproductive technology is available across the US, but if states take action to prohibit the discarding of unused embryos or pass related legislation, it could affect access to IVF. Laws prohibiting IVF or effectively outlawing the procedure by defining personhood as being conferred at the moment of conception have been under discussion in several states in recent years, including Ohio, Virginia, and Texas.

Americans' love of combining freedom and charred meat began in the 1800s

In the 19th century, politicians (particularly in Virginia) hosted large public barbecues to celebrate Independence Day and, of course, boost their own campaigns. When personal grills became common in the 20th century, the tradition moved into backyards and block parties, where it's still going strong today.

The 1948 Supreme Court ruling was overturned in 2020

In 2020, US District Court Judge Analisa Torres overturned the 1948 Supreme Court ruling that broke up the studio system—effectively allowing the film industry to become vertically integrated once again—with companies like Amazon and Disney taking advantage of the relaxed regulations.

In 1956, Althea Gibson became the first Black Grand Slam champion

From 1944 to 1956, Althea Gibson dominated the American Tennis Association circuit, all while Jim Crow laws denied her entry into tournaments or even a hotel room like her fellow white competitors. This Wimbledon video shows her experience becoming the first Black woman to play the tournament in 1951, and meeting Queen Elizabeth II in 1957 when she won.

An adultery and poisoning case examined whether federal treaty power supersedes state law

This Radiolab podcast unpacks Bond v. United States, where a local love-triangle assault became a federal case under an international treaty—forcing the Supreme Court to confront a founding question: How far can federal power reach into crimes traditionally handled by the states?

Traveling yogis spread the practice across the US

After a 1923 Supreme Court decision ruled that Asians were ineligible for citizenship, many South Asian immigrants had relatively few job opportunities and began moving around the country teaching yoga and spirituality. At the time, yoga was viewed less as a physical practice and more as a mystical one, something many of the teachers embraced to attract students. South Asians regained the right to citizenship in 1946.

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

The Department of Justice was formally established in 1870

Passed by Congress in 1870, the Act to Establish the Department of Justice centralized federal legal work under the attorney general, bringing together US attorneys and marshals into a single department.

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

See a collection of LIFE's most iconic photos in history

Famous images, like a sailor kissing a nurse in Times Square to celebrate the end of World War II, are each shared with context in this article. See some of history's most famous moments from a unique point of view, including photos of Marilyn Monroe, the Beatles, and Muhammad Ali.

Nevada legalized gambling in 1931

Las Vegas was originally a quiet town, but the legalization of gambling (along with relatively lax divorce laws) turned it into a Prohibition-era destination.

See the most iconic photos from four decades of LIFE magazine

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

70 years ago today, city officials in Santa Cruz, California, banned rock 'n' roll to protect its youth from corruption after witnessing a 'provocative' concert the night before.

View the ten deadliest tornadoes in US history.

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.

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

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

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.

44% of Americans say they pray at least once a day—discover how your state's religiosity stacks up against the rest of the country.

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

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

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

This real-time tracking of the hantavirus cruise ship outbreak in May 2026 offers a unique glimpse into the global reach of the outbreak and whether the virus sickened passengers and their communities around the world.

The Brothers Grimm were lawyers before they were storytellers, but became interested in fairy tales as they began investigating how rules and customs had been passed down through cultures.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.

Brandi Chastain, the star of the 1999 US victory over China in the 1999 Women's World Cup, was a last-second choice to take the penalty kick that sealed the victory.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

The Great Salt Lake's distinct dual coloration results from high-salinity organisms that only live in the northern portion and produce a purple protein.