United States Senate

• 1. Introduction

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  The United States Senate has stood at the center of American democracy since the 4th of March 1789, the date Article One of the Constitution first took effect. One hundred people hold it together: two senators from each of the fifty states, regardless of whether that state holds millions of residents or just a few hundred thousand. That simple arithmetic conceals centuries of argument, compromise, and raw political conflict. How did a country founded on the idea that all people are equal end up with a legislative body where the vote of a citizen from Wyoming carries far more weight than the vote of a citizen from California? And why, after more than two centuries, does this upper chamber of Congress still hold powers that no other body in the federal government can claim? Those are the questions this documentary sets out to answer.

• 2. Forged in Compromise

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  In 1787, the single most contentious debate among the drafters of the Constitution was not about slavery, not about the presidency, but about how to award representation in the Senate. Small states held firm: under the Articles of Confederation, each state had equal power, and they refused to surrender it. When compromise appeared impossible, those small states threatened to secede entirely. The standoff ended in what became known as the Connecticut Compromise, approved by a razor-thin vote of 5-4. It guaranteed that every state, no matter how small, would send exactly two senators to Washington.

  The name "Senate" reaches back further than 1787. When the chamber first convened in 1789, its founders consciously modeled it on the ancient Roman Senate, and the word itself descends from the Latin senatus, meaning council of elders, rooted in senex, the Latin word for old man. Article Five of the Constitution added an unusual protection for this arrangement: no constitutional amendment may strip a state of its equal suffrage in the Senate without that state's consent. From the start, the framers understood they had built something that would be very hard to undo.

  For its first century and a quarter, the Senate was not elected by the people at all. State legislatures chose their senators, a system that produced persistent problems: seats sat vacant when legislatures deadlocked, bribery crept into the selection process, and political manipulation of appointments became routine. By the early twentieth century, the legislatures of as many as 29 states had already moved to popular referendums on Senate candidates. In 1913, the Seventeenth Amendment settled the matter nationally, requiring senators to be chosen by statewide popular vote. The Senate would remain an institution designed for small-state protection, but the people would now fill it directly.

• 3. Powers Unlike Any Other

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  Convicting a president of the United States requires a two-thirds majority of the senators present, a threshold that has never been met. Three presidents have been impeached: Andrew Johnson in 1868, Bill Clinton in 1998, and Donald Trump in 2019 and again in 2021. All four trials ended in acquittal. Johnson's came closest to conviction; the Senate fell exactly one vote short of the required two-thirds. During such trials, if the sitting president is the defendant, the chief justice of the United States, not the vice president, presides over the chamber.

  Beyond impeachment, the Senate holds exclusive authority over presidential appointments. Cabinet secretaries, federal judges, justices of the Supreme Court, ambassadors, and the heads of regulatory agencies all require Senate confirmation before taking office. Typically, a nominee faces a hearing before the relevant Senate committee before the full Senate votes. In all of Senate history, only nine Cabinet nominees have been rejected outright on the Senate floor. The Senate has additional leverage through the committee process itself: committees can simply refuse to act on a nomination, effectively killing it without a direct vote.

  Treaty ratification requires that two-thirds of the senators present agree, giving each state, through its two senators, an equal say in international commitments. Some scholars, including Laurence Tribe and John Yoo, have argued that the growing practice of executive agreements and congressional-executive agreements, which bypass the two-thirds threshold entirely, unconstitutionally circumvents this process. Courts have generally upheld those agreements anyway. The Senate also holds one rare electoral function: under the Twelfth Amendment, if no vice-presidential candidate wins a majority in the Electoral College, the Senate elects the vice president from the top two candidates. This has happened only once in American history, in 1837, when the Senate elected Richard Mentor Johnson.

• 4. Who Can Serve

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  Article I, Section 3 of the Constitution sets three requirements for senators: a minimum age of 30, at least nine years of United States citizenship, and residence in the state they seek to represent. In Federalist No. 62, James Madison justified the stricter age and citizenship requirements by arguing that the "senatorial trust" demanded a "greater extent of information and stability of character" than the House required.

  In the early years, the Senate did not police those requirements carefully. Four senators who had not yet reached 30 were admitted anyway: Henry Clay at 29 in 1806, John Jordan Crittenden at 29 in 1817, Armistead Thomson Mason at 28 in 1816, and John Eaton at 28 in 1818. That has not happened since. Later examples show senators working around the age rule without breaking it. Rush D. Holt Sr. was elected at 29 in 1934 and simply waited until he turned 30 on the following June 19 before taking the oath of office. Joe Biden was elected on the 7th of November 1972 at 29, just 13 days before his 30th birthday on the 20th of November 1972, and turned 30 before the swearing-in ceremony for incoming senators in January 1973.

  The Fourteenth Amendment added a further disqualification, barring from the Senate any federal or state official who swore to support the Constitution and then engaged in rebellion or aided the enemies of the United States. The provision was aimed directly at preventing former Confederates from serving, coming into force shortly after the Civil War. Removing that disqualification requires a two-thirds vote of both chambers of Congress. As a consequence of service, the annual salary for most senators since 2009 has been $174,000, while party leaders and the president pro tempore receive $193,400. In 2003, at least 40 senators were millionaires; by 2018, that figure had grown to over 50.

• 5. The Filibuster's Long History

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  The filibuster traces its origins to a Senate procedural accident in 1805, when Aaron Burr suggested eliminating seldom-used procedural tools, including the motion to call "the previous question." With that motion gone, the possibility of unlimited debate was born. Thirty-six years later, in 1841, Senator John Calhoun organized a group of Southern senators to hold the floor, one after another for days, in opposition to the national bank bill. The bill passed, but Calhoun had demonstrated the power of sustained obstruction.

  The practice continued unchecked until World War I, when a filibuster during wartime pushed President Woodrow Wilson to demand a mechanism for forcing a Senate vote. From that pressure came Senate rule XXIII and the procedure of cloture. In the 1970s, the vote threshold for cloture was lowered and Senate scheduling was reorganized, effectively ending the old-style "talking filibuster" in which senators had to physically hold the floor.

  The most famous individual filibuster speech in Senate history was delivered by Strom Thurmond, identified in the Senate record as D-SC, who spoke for over 24 hours in an unsuccessful attempt to block passage of the Civil Rights Act of 1957. That record for a speech delivered in opposition to actual legislation stood for decades. In 2025, Senator Cory Booker of New Jersey delivered what the source identifies as the longest individual speech in Senate history overall, though not technically a filibuster since no bill was being blocked. Booker spoke for 25 hours and five minutes, beginning at 7 PM on March 31 and ending on April 1, addressing actions of the Trump administration. Today, ending most filibusters requires three-fifths of the Senate, meaning 41 senators can effectively block legislation that lacks 60 votes.

• 6. The Democracy Debate

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  Political scientist Robert Dahl argued directly that the U.S. Senate represents "the most extreme" degree of unequal representation among democracies, calling it "a profound violation of the democratic idea of political equality among citizens." The gap he identified has only widened. In 1790, Virginia had roughly ten times the population of Rhode Island. By 2020, California had 70 times the population of Wyoming, yet each state holds the same two Senate seats.

  Harvard professors Daniel Ziblatt and Steven Levitsky found, in an analysis of democracies worldwide, that only Argentina and Brazil's upper chambers deviate further from the one-person-one-vote principle than the U.S. Senate does. David Wasserman estimated in 2018 that Democrats would need to win the national popular vote by more than 6 percentage points just to maintain majority control of the Senate. U.S. citizens in the District of Columbia and in U.S. territories have never been represented in the Senate at all. By the beginning of the twenty-first century, two-thirds of legislatures globally had moved to unicameral structures, with most remaining upper houses either growing more representative or becoming less powerful.

  Defenders of the structure point to different values. James Madison, who was initially opposed to equal suffrage in the Senate before changing his position, argued in Federalist No. 62 that the chamber serves as a check against the potential tyranny of the majority. Stanford political theorist Bruce E. Cain argued that equal representation "fosters a more inclusive and representative democracy, where diverse regional interests are considered." Yale legal scholar Akhil Reed Amar, in his book America's Constitution: A Biography, described the Senate's structure as integral to the federal system, ensuring smaller states retain a voice. Other nations have adopted comparable arrangements: Australia's Senate allocates twelve senators to each of its six original states, and Switzerland's Council of States grants two seats to each canton regardless of population. The 1993 Omnibus Budget Reconciliation Act and the Affordable Care Act both passed, their defenders note, partly because Democrats then held seats in lower-population states such as North Dakota, Montana, and West Virginia.