United States Senate

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U.S. Senate chamber

U.S. Capitol building, Washington, D.C.

Who were the first women to serve in the U.S. Senate?

Hubert Humphrey's signature

Andrew Johnson's impeachment trial in the Senate, 1868

What is a midterm election?

U.S. Senate (118th Congress)

United States Senate: 118th Congress

Discover how many women have served in the Senate.

Senate welcome gathering, 2000

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History of Women in the U.S. Congress

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The United States Supreme Court building, Washington, D.C.

14 Questions About Government in the United States Answered

United States Presidential Election of 2012. Mitt Romney. Official portrait of President Barack Obama in the Oval Office, Dec. 6, 2012 after his reelection Nov. 6, 2012. Official portrait Obama

10 Democrats Who Made History

Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

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airplane in flight (plane, aircraft, flying)

7 Puzzling Plane Disappearances

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Why Are Some Time Zones 30 Minutes Off Instead of an Hour?

Scolex (head) of the tapeworm Taenia solium. The hooks of the scolex enable the tapeworm to attach to the intestinal wall.

Uninvited Guests: The 7 Worst Parasitic Worms

Artist interpretation of space asteroids impacting earth and moon. Meteoroids, meteor impact, end of the world, danger, destruction, dinosaur extinct, Judgement Day, Doomsday Predictions, comet

Major Mass Extinctions

Nelson Mandela, undated photo.

15 Nelson Mandela Quotes

San Francisco, California/USA-1/18/20: Womens March at Civic Center marching with signs of political protest regarding equality also embracing 2020 presidential candidates and celebrating equality

How Does the U.S. Government Define the Difference Between a Protest and a Riot?

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United States Senate: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Last Updated: Jun 15, 2025

News •

The GOP's big bill would bring changes to Medicaid for millions • June 15, 2025, 7:26 AM ET (AP)

Authorities still searching for suspect in shooting of 2 Minnesota state lawmakers • June 14, 2025, 9:46 PM ET (AP)

The Latest: California senator removed after interrupting news conference by Kristi Noem • June 12, 2025, 7:35 PM ET (AP)

'Shocked' and 'sickened' Democrats react with fury to video of Padilla's removal • June 12, 2025, 7:15 PM ET (AP)

Sen. Padilla is forcefully removed from Noem's news conference on immigration raids and handcuffed • June 12, 2025, 6:49 PM ET (AP)

Facts

Date	1789 - present
Areas Of Involvement	Congressional Term Limits
Related People	Chris Coons • John G. Carlisle

Photos and Videos

U.S. Senate chamber

U.S. Capitol building, Washington, D.C.

Hubert Humphrey's signature

Andrew Johnson's impeachment trial in the Senate, 1868

Senate welcome gathering, 2000

Who were the first women to serve in the U.S. Senate?

What is a midterm election?

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Gutzon Borglum. Presidents. Sculpture. National park. George Washington. Thomas Jefferson. Theodore Roosevelt. Abraham Lincoln. Mount Rushmore National Memorial, South Dakota.

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The original copy of the constitution of the United States; housed in the National Archives, Washington, D.C.

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The United States Supreme Court building, Washington, D.C.

14 Questions About Government in the United States Answered