Filibuster Rules of the U.S. Senate

How Do You Stop a Filibuster in the U.S. Senate?

Rand Paul filibusters
Republican U.S. Sen. Rand Paul of Kentucky is seen on a TV monitor participating in a filibuster on the Senate floor on March 6, 2013. Alex Wong/Getty Images News

A filibuster is a tactic used in the U.S. Senate to delay votes or stifle debate. Typically, a member wishing to filibuster will ask to speak and, in an attempt to stall legislation action, hold the chamber's attention for hours at a time. There are few rules that govern a filibuster because the Senate believes its members have the right to speak as long as they want on any issue. 

The record for the longest filibuster is held by the late U.S. Sen.

Strom Thurmond of South Carolina, who spoke for 24 hours and 18 minutes against the Civil Rights Act of 1957, according to U.S. Senate records. In the modern era, Republican U.S. Sen. Rand Paul of Kentucky staged a daylong filibuster in 2013 that captivated conservatives and libertarians as well as the national news media.

Critics call the filibuster unconstitutional at worst and unfair at best. Others believe it to be a historical relic. Practitioners of the filibuster insist that it protects the rights of the minority against the tyranny of the majority.

Related Story: The 5 Longest Filibusters in History

By their nature, filibusters are meant to draw attention to a specific issues and have the potential to inspire compromise. According to the US Senate website, the word filibuster comes from a Dutch word meaning "pirate" and was first used more than 150 years ago to describe "efforts to hold the Senate floor in order to prevent action on a bill."

How Filibusters End

Filibusters rules allow the delay tactic to go on for hours or even days. The only way to force the end of a filibuster is through parliamentary procedure known as cloture, or Rule 22. Once cloture is used, debate is limited to 30 additional hours of debate on the given topic.

Sixty members of the 100-member Senate must vote for cloture to stop a filibuster.

 At least 16 members of the Senate must sign a cloture motion or petition that states: "We, the undersigned Senators, in accordance with the provisions of Rule XXII of the Standing Rules of the Senate, hereby move to bring to a close the debate upon (the matter in question)."


Important Dates in the History of the Filibuster

​Here's a look at some of the most important moments in the history of the filibuster and cloture.

  • 1841: Henry Clay threatened to change the Senate's filibuster rules to "allow the majority to close debate" when Democrats blocked a bank bill.
  • 1872: Vice President Schuyler Colfax ruled that "under the practice of the Senate the presiding officer could not restrain a Senator in remarks which the Senator considers pertinent to the pending issue."
  • 1919: First use of Rule 22 when Senate invoked cloture to end debate against the Treaty of Versailles.
  • 1935: U.S. Sen. Huey Long of Louisiana filibustered for 15 hours and 30 minutes trying, without success, to keep Senate oversight of National Recovery Administration's senior employees.
  • 1957: U.S. Sen. Strom Thurmond of South Carolina filibustered for a record 24 hours and 18 minutes as part of a move that successfully blocked the Civil Rights Act of 1957.
  • 1964: U.S. Sen. Robert Byrd of West Virginia filibustered for 14 hours and 13 minutes in an unsuccessful attempt to block the Civil Rights Act of 1964.
  • 1968: The Abe Fortas appointment to succeed Earl Warren as Chief Justice of the Supreme Court was derailed by Republicans through filibuster.
  • 2013: Republican U.S. Sen. Rand Paul of Kentucky filibustered for nearly 13 hours to question and raise awareness of the U.S. government's use of drones. It is the ninth-longest filibuster in history. "I will speak until I can no longer speak," he said. Paul ended his filibuster because he had to go to the bathroom.

[This articled was updated in July 2016 by U.S. Politics Expert Tom Murse.]

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Your Citation
Gill, Kathy. "Filibuster Rules of the U.S. Senate." ThoughtCo, Jul. 11, 2016, Gill, Kathy. (2016, July 11). Filibuster Rules of the U.S. Senate. Retrieved from Gill, Kathy. "Filibuster Rules of the U.S. Senate." ThoughtCo. (accessed April 23, 2018).