What Is the Impeachment Process? A Step-by-Step Guide

In America’s 243-year history, only three previous presidents have faced impeachment proceedings. The Constitution does not prescribe a specific process and neither does federal law, leaving Congress to set its own rules. Here’s how the fourth impeachment unfolded over more than four months.

Speaker Nancy Pelosi announced a formal

impeachment inquiry, directing a handful of

House committees to continue their monthslong

investigations into President Trump.

Congress was handed important findings from multiple investigative efforts, including from special prosecutors, for the impeachment inquiries of Presidents Richard M. Nixon and Bill Clinton. Kenneth Starr investigated Clinton, and Archibald Cox pursued Nixon. In this impeachment, House committees are doing that job.

The committee leaders for the House Intelligence,

Oversight and Reform, and Foreign Affairs

Committees have been issuing subpoenas, taking

depositions and conducting closed-door meetings.

Two more committees, Ways and Means and

Financial Services, also have ongoing

investigations into issues related to Mr. Trump.

House vote on impeachment rules

In October 1998, the House voted 258 to 176, with 31 Democrats breaking ranks with the president, to begin a full-scale, open-ended inquiry into possible grounds for the impeachment of Clinton.

The House voted to approve a resolution that laid out the rules for the impeachment inquiry into Mr. Trump.

Intelligence Committee public hearings

After closed-door investigations, open hearings were conducted

by the Intelligence Committee. Representative Adam B. Schiff

of California, the Democrat who leads the committee, and

Representative Devin Nunes, the panel’s top Republican, each

had 45 minutes to question witnesses. Members of the panel

got five minutes each to ask questions.

Intelligence Committee report

The Intelligence Committee approved sending a report with

its findings to the Judiciary Committee. The report was also

made available to the public.

Judiciary Committee hearings

In 1974, the Judiciary Committee held multiple meetings and hearings from February through July. Some of the hearings were televised.

In 1998, four hearings were held in connection with Clinton’s impeachment by the Judiciary Committee. The hearings lasted for two days.

Jerrold Nadler, Chairman

After receiving the report, the Judiciary Committee held two more

hearings. The first hearing invited legal scholars to discuss whether Mr.

Trump’s conduct amounted to an impeachable offense. In the second

hearing, staff lawyers from the Intelligence Committee presented their

dueling reports on the investigation. The president and his counsel were

invited but declined to participate.

Proposed articles of impeachment

The House Judiciary Committee’s Democratic majority

released two proposed articles of impeachment against

Mr. Trump, charging the president with abuse of power

and obstruction of Congress.

Articles of impeachment

The committee approved three articles:

I. Obstructing the Watergate investigation

II. Abuse of power

III. Defiance of House subpoenas

The Judiciary Committee held a two-day markup session to

debate and make revisions to the proposed articles. Afterward,

the committee voted to approve both articles. The articles were

reported to the full House.

The current White House said it would not cooperate with the House inquiry.

The committee approved four articles:

I. Perjury in the grand jury

II. Perjury in the civil case

III. Obstruction of justice

IV. Abuse of power

Judiciary Committee vote to

approve article on abuse of power

Vote to approve article on obstruction of Congress

Nixon resigned before the impeachment resolution was reported to the full House.

The Judiciary Committee recommended two articles to

be considered on the House floor. The House Rules

Committee set out the rules for formally impeaching the

president, allowing for six hours of debate.

The House debated Clinton’s articles of impeachment for two days.

House impeachment vote

In President Andrew Johnson's case in 1868,

the House voted to impeach him on “high

crimes and misdemeanors” and notified the

Senate about the impeachment before the

articles were drafted.

The House passed the two articles of impeachment, along party lines.

Article I: Abuse of Power

Present or not voting 4

Article II: Obstruction of Congress

Present or not voting 4

The House voted on each article separately. Only one article needs to be passed to impeach the president.

In Clinton’s case, the House voted on the articles separately and approved two of the four articles presented by the Judiciary Committee.

I. Perjury in the grand jury

II. Perjury in the civil case

III. Obstruction of justice

IV. Abuse of power

A majority of the House members

would have to vote no .

A majority of the House

members voted yes .

Trump was impeached

The process ends

The House named 13 Republicans to serve as managers of Clinton’s impeachment case — including Lindsey Graham, the senior senator from South Carolina.

The House appointed a team of seven lawmakers from

the chamber, known as managers, to play the role of

prosecutors in the Senate trial. Afterward, they

delivered the articles of impeachment to the Senate,

which served as the jury.

Mr. Trump’s defense team

The legal team of Mr. Trump was led by the White House counsel,

Pat A. Cipollone, and his personal laywer, Jay Sekulow. The team

also included former independent counsel Kenneth W. Starr

and defense lawyer Alan Dershowitz.

The chief justice of the United States was sworn in to

preside over the trial and then swore in the members of the

Senate. The Senate laid out due dates for trial briefs from

the House managers and the president’s lawyers, and the

trial was scheduled to resume on Tuesday, Jan. 21.

Chief Justice John G. Roberts Jr.

presided over the trial.

Writ of summons

The Senate issued a summons to the president, asking him to respond to the articles of impeachment by Saturday, Jan. 18.

Clinton and Johnson had

their lawyers answer to

the articles as well.

Mr. Trump’s legal team formally

filed a response, rejecting the

impeachment case as illegitimate.

During the trial, any senator or Mr.

Trump’s lawyers could make a motion

to dismiss the case. If passed by a

majority vote, the process would end.

On Jan. 8, 1999, the day after House

managers presented Clinton’s articles of

impeachment, the Senate met in an

unprecedented informal joint session,

adopting a resolution that set forth the trial

proceedings but postponed the decision

on whether to call witnesses.

The Senate held a debate over

the rules and procedures

governing the trial.

Johnson trial in 1868

The House managers and the

president’s legal team each spent

three days presenting their cases

Clinton trial in 1999

Senators questioned the managers

and Mr. Trump’s lawyers for about

16 hours over two days.

In Clinton's trial, the Senate

allowed for a vote on

dismissal after the senators

asked their questions.

Decision on evidence

After four hours of debate, the

Senate rejected the motion to

consider requests for witnesses or

documents in a vote of 51 to 49.

A majority of the Senate

members voted no .

A majority of the Senate

members would have to vote yes .

During Clinton’s trial, the Senate voted not to call Monica Lewinsky to testify in the Senate chamber but allowed videotaped testimony to be presented.

House managers and Mr. Trump’s

lawyers would be allowed to

propose and argue for specific

witnesses or documents, with each

requiring an additional vote.

If a majority of the Senate did approve

calling specific witnesses, those

witnesses would first be interviewed

privately. Then the Senate would decide

whether to let them testify in public.

Senators heard from both sides

as the managers and Trump’s lawyers

delivered closing arguments. Each team

had two hours to make their case.

Seventy-eight senators spoke on the

Senate floor to explain their decisions.

They each had up to 10 minutes.

Both Johnson and Clinton were acquitted by the Senate.

The Senate rejected both articles of

impeachment against Mr. Trump, with each

vote falling short of the two-thirds majority

needed to convict. Mitt Romney of Utah was

the only senator to cross party lines.

Verdict on Clinton’s article on perjury

Article I: Abuse of Power

Additional votes needed to convict

Verdict on Clinton’s article on obstruction of justice

Article II: Obstruction of Congress

Additional votes needed to convict

Less than two-thirds of

the Senate voted yes.

More than two-thirds of the

Senate would have to vote yes.

The process ended,

and Trump was acquitted

Trump is removed

The Senate can subsequently vote on whether to

disqualify the president from future office. If the

vote were held, a simple majority vote would be required.

Speaker Nancy Pelosi announced a formal impeachment inquiry, directing a handful of House committees to continue their monthslong investigations into President Trump.

The committee leaders for the House Intelligence, Oversight and Reform, and Foreign Affairs Committees have been issuing subpoenas, taking depositions and conducting closed-door meetings.

Two more committees, Ways and Means and Financial Services, also have ongoing investigations into issues related to Mr. Trump.

Congress was handed important findings from multiple investigative efforts, including from special prosecutors, for the impeachment inquiries of Presidents Richard M. Nixon and Bill Clinton. Kenneth Starr investigated Clinton, and Archibald Cox pursued Nixon. In this impeachment, House committees are doing that job.

The House voted to approve a resolution

that laid out the rules for the

impeachment inquiry into Mr. Trump.

In October 1998, the House voted 258 to 176, with 31 Democrats breaking ranks with the president, to begin a full-scale, open-ended inquiry into possible grounds for the impeachment of Clinton.

Intelligence Committee public hearings

After closed-door investigations, open hearings

were conducted by the Intelligence Committee.

Representative Adam B. Schiff of California,

the Democrat who leads the committee, and

Representative Devin Nunes, the panel’s top

Republican, each had 45 minutes to question

witnesses. Members of the panel got five

minutes each to ask questions.

The Intelligence Committee approved

sending a report with its findings to the

Judiciary Committee. The report was also

made available to the public.

Jerrold Nadler, Chairman

After receiving the report, the Judiciary

Committee held two more hearings. The first

hearing invited legal scholars to discuss

whether Mr. Trump’s conduct amounted to an

impeachable offense. In the second hearing,

staff lawyers from the Intelligence Committee

presented their dueling reports on the

investigation. The president and his counsel

were invited but declined to participate.

In 1974, the Judiciary Committee held multiple meetings and hearings from February through July. Some of the hearings were televised.

In 1998, four hearings were held in connection with Clinton’s impeachment by the Judiciary Committee. The hearings lasted for two days.

Proposed articles of impeachment

The House Judiciary Committee’s

Democratic majority released two proposed

articles of impeachment against Mr. Trump,

charging the president with abuse of power

and obstruction of Congress.

Articles of impeachment

The Judiciary Committee held a two-day

markup session to debate and make

revisions to the proposed articles.

Afterward, the committee voted to

approve both articles. The articles were

reported to the full House.

Judiciary Committee vote to

approve article on abuse of power

Vote to approve

article on obstruction of Congress

The committee approved three articles:

I. Obstructing the Watergate investigation

II. Abuse of power

III. Defiance of House subpoenas

The current White House said it would not cooperate with the House inquiry.

The committee approved four articles:

I. Perjury in the grand jury

II. Perjury in the civil case

III. Obstruction of justice

IV. Abuse of power

Nixon resigned before the impeachment resolution was reported to the full House.

The Judiciary Committee recommended two

articles to be considered on the House floor. The

House Rules Committee set out the rules for

formally impeaching the president, allowing for

six hours of debate.

The House debated Clinton’s articles of impeachment for two days.

The House passed the two articles of impeachment, along party lines.

Article I: Abuse of Power

Article II: Obstruction of Congress

The House voted on each article separately. Only one article needs to be passed to impeach the president.

In President Andrew Johnson's

case in 1868, the House voted to

impeach him on “high crimes and

misdemeanors” and notified the

Senate about the impeachment

before the articles were drafted.

In Clinton’s case, the House

voted on the articles separately

and approved two of the four

articles presented by the

A majority of the House members would have to vote no .

A majority of the

The House appointed a team of seven

lawmakers from the chamber, known as

managers, to play the role of prosecutors in

the Senate trial. Afterward, they delivered the

articles of impeachment to the Senate, which

served as the jury.

Mr. Trump’s defense team

The legal team of Mr. Trump was led by the

White House counsel, Pat A. Cipollone, and

his personal laywer, Jay Sekulow. The team

also included former independent

counsel Kenneth W. Starr and defense

lawyer Alan Dershowitz.

The House named 13 Republicans to serve

as managers of Clinton’s impeachment case

— including Lindsey Graham, the senior

senator from South Carolina.

The chief justice of the United States was

sworn in to preside over the trial and then

swore in the members of the Senate. The

Senate laid out due dates for trial briefs from

the House managers and the president’s

lawyers, and the trial was scheduled to resume

on Tuesday, Jan. 21.

Chief Justice John G. Roberts Jr.

presided over the trial.

Writ of summons

The Senate issued a summons to the president,

asking him to respond to the articles of

impeachment by Saturday, Jan. 18.

Mr. Trump’s legal team formally filed a

response, rejecting the impeachment

case as illegitimate.

Clinton and Johnson had their lawyers

answer to the articles as well.

During the trial, any senator or Mr.

Trump’s lawyers could make a motion

to dismiss the case. If passed by a

majority vote, the process would end.

The Senate held a debate over

the rules and procedures

governing the trial.

On Jan. 8, 1999, the day after

House managers presented Clinton’s

articles of impeachment, the Senate

met in an unprecedented informal

joint session, adopting a resolution

that set forth the trial proceedings

but postponed the decision on

whether to call witnesses.

The House managers and the

president’s legal team each spent

three days presenting their cases to

Senators questioned the managers

and Mr. Trump’s lawyers for about

16 hours over two days.

Decision on evidence

After four hours of debate, the

Senate rejected the motion to

consider requests for witnesses or

documents in a vote of 51 to 49.

A majority of the

A majority of the

would have to vote yes .

House managers and Mr. Trump’s

lawyers would be allowed to

propose and argue for specific

witnesses or documents, with

each requiring an additional vote.

If a majority of the Senate did

approve calling specific witnesses,

those witnesses would first be

interviewed privately. Then the

Senate would decide whether to

let them testify in public.

Senators heard from both sides as the managers and Trump’s lawyers delivered closing arguments. Each team had two hours to make their case.

In Clinton’s trial, the Senate allowed

for a vote on dismissal after the

senators asked their questions. The

Senate also voted not to call Monica

Lewinsky to testify in the Senate

chamber but allowed videotaped

testimony to be presented.

Seventy-eight senators spoke on the Senate floor to explain their decisions. They each had up to 10 minutes.

The Senate rejected both articles of

impeachment against Mr. Trump, with each

vote falling short of the two-thirds majority

needed to convict. Mitt Romney, Republican of

Utah, was the only senator to cross party lines.

Article I: Abuse of Power

Article II: Obstruction of Congress

More than two-thirds

of the Senate would

Less than two-thirds

of the Senate voted yes.

ended, and Trump

Both Johnson and Clinton were aquitted by the Senate.

Verdict on Clinton’s article on perjury

needed to convict

Verdict on Clinton’s article on

obstruction of justice

needed to convict

*Democratic totals include two independents who caucus with the Democrats.

Sources: Congressional Research Service; House Practice: A Guide to the Rules, Precedents, and Procedures of the House; United States Senate Manual; Senate Historical Office; Congress.gov; Frank O. Bowman III, University of Missouri. Photos by U.S. Senate via AP and U.S. Senate Historical Society via AP.

Additional work by Lauren Leatherby.

Correction : Dec. 5, 2019

An earlier version of this article incorrectly indicated how hearings held during former President Richard M. Nixon's impeachment were conducted. While some hearings were televised, not all were.