Impeachment works in two stages: the House of Representatives votes on formal charges by simple majority, and if at least one charge passes, the Senate holds a trial and can remove the official only if two-thirds of senators present vote to convict. The House stage is what “impeachment” technically means, and by itself it removes no one. In more than two centuries, the House has impeached 22 federal officials, and the Senate has convicted and removed only eight.
The Two Stages at a Glance
The House acts like a grand jury. It investigates, drafts articles of impeachment (the specific charges), and votes on whether to bring them. The Senate then acts like the trial court. Senators hear evidence, question witnesses through the process, and vote guilty or not guilty on each article. The two chambers use very different thresholds: a simple majority in the House to charge, two-thirds of senators present to convict. That gap is the single most important feature of the whole system.
Who Can Be Impeached
Article II, Section 4 applies impeachment to “the President, Vice President and all civil Officers of the United States.”1Cornell Law School. Article II U.S. Constitution “Civil officers” covers federal judges (including Supreme Court justices) and heads of executive departments such as cabinet secretaries. Most impeachment cases in American history have actually involved judges, largely because their lifetime appointments leave no other way to remove them short of resignation.
Not every federal worker qualifies. The Supreme Court has distinguished “officers,” who exercise significant governmental authority, from lower-level employees who carry out subordinate tasks; only officers can be impeached. Military officers are also likely excluded, because “civil” was understood to mark off civilian positions from military ones.2Legal Information Institute (LII) / Cornell Law School. Offices Eligible for Impeachment
Members of Congress cannot be impeached. The Senate settled that in 1799 when it dismissed articles against Senator William Blount for lack of jurisdiction.3U.S. Senate. Impeachment Trial of Senator William Blount, 1799 Each chamber disciplines its own members instead, and can expel by a two-thirds vote under Article I, Section 5.4Legal Information Institute. U.S. Constitution Annotated Article I Section V Clause II – Overview of Expulsion Clause
What Counts as an Impeachable Offense
The Constitution allows removal for “Treason, Bribery, or other high Crimes and Misdemeanors.”1Cornell Law School. Article II U.S. Constitution Treason has a constitutional definition of its own: levying war against the United States or giving aid and comfort to its enemies, provable only by two witnesses to the same overt act.5Cornell Law School. Treason Clause – Doctrine and Practice Bribery covers accepting or soliciting something of value in exchange for the use of official influence.
The contested phrase is “high Crimes and Misdemeanors.” It does not mean ordinary criminal offenses. “High” refers to the elevated position of the officeholder and the public nature of the misconduct, not the severity of a typical felony. An official does not have to break a criminal statute to be impeached, and committing a crime does not automatically make conduct impeachable. The real question is whether the official abused the public trust or acted in a way fundamentally incompatible with the duties of the office.6Library of Congress. Overview of Impeachable Offenses
Because the Constitution never lists every qualifying act, the meaning of the phrase is worked out by Congress rather than the courts. The Supreme Court has held that impeachment is a political process the judiciary will not second-guess.6Library of Congress. Overview of Impeachable Offenses Past impeachments have targeted abuse of official power, corruption, filing false tax returns, and improper relationships in which the official received personal benefits in exchange for favorable treatment.
How the House Brings Charges
The House holds “the sole Power of Impeachment” under Article I, Section 2.7Legal Information Institute. U.S. Constitution Annotated Article I Section II Clause V An inquiry usually begins when allegations are referred to the House Judiciary Committee, which can issue subpoenas, gather documents, and compel testimony. If the committee decides the evidence warrants action, it drafts articles of impeachment stating the specific alleged misconduct.
Those articles go to the full House for debate and a vote. A simple majority on any single article is enough.8U.S. Senate. About Impeachment If at least one article passes, the official has been impeached. The word gets misused constantly. Impeachment means the official has been formally charged. It is not a finding of guilt and it is not removal from office. Three presidents have been impeached, and all three finished their terms because the Senate did not convict.
Once the House votes to impeach, it appoints members called “managers” to present the case to the Senate. They function as the prosecutors at trial.8U.S. Senate. About Impeachment
How the Senate Trial Works
The Senate holds “the sole Power to try all Impeachments” under Article I, Section 3. When the trial begins, senators take a special oath and the chamber operates as a court.9Library of Congress. Article I Section 3 Clause 6 The House managers present the case for removal. The accused official has the right to counsel, can call witnesses, and can cross-examine the managers’ witnesses. Senate rules govern the details, and the Senate has broad power to set procedures for each trial.
When the president is on trial, the Chief Justice of the United States presides. The Constitution requires that to avoid handing the gavel to the vice president, who would stand to gain the office.10Cornell Law Institute. U.S. Constitution Annotated – Article I, Section 3, Clause 6 – Overview of Impeachment Trials For every other impeachment, the Senate’s own presiding officer runs the trial, typically the president pro tempore or a designated senator.
One feature surprises people who expect criminal-court rules: the Senate has never adopted a fixed standard of proof. It has not required “beyond a reasonable doubt” or any other single threshold, and in 1986 it rejected a proposal to use the reasonable-doubt standard in the trial of Judge Harry Claiborne. Each senator applies the standard their own judgment dictates.
The Vote to Convict or Acquit
After both sides finish, the Senate votes on each article separately. Conviction requires “the Concurrence of two thirds of the Members present.”9Library of Congress. Article I Section 3 Clause 6 With all 100 senators present, that is 67 guilty votes. The threshold is tied to attendance rather than the full Senate, which occasionally matters. A guilty verdict on even one article results in immediate removal, with no appeal. If the Senate acquits, the official stays in office and the impeachment carries no further legal effect.
What Happens If the Official Is Convicted
Conviction produces two possible consequences, and only two. Removal from office is automatic. The Senate may then hold a separate vote to disqualify the individual from ever holding federal office again, which needs only a simple majority.11Library of Congress. Article I Section 3 Clause 7 The Senate does not always take that step. Judge Alcee Hastings was convicted and removed in 1989 without being disqualified, and later won election to the House.
Impeachment itself imposes no fines, no prison time, and no other criminal penalty. The Judgment Clause preserves the possibility of ordinary prosecution: the convicted party “shall nevertheless be liable and subject to Indictment, Trial, Judgment and Punishment, according to Law.”12Cornell Law School – Legal Information Institute (LII). Doctrine on Impeachment Judgments Impeachment and criminal prosecution run on separate tracks. A prior criminal acquittal does not block impeachment, and a Senate conviction is not a criminal record.
If a President Is Removed
No president has ever been removed, but the succession is in place. The vice president would immediately assume the presidency under the 25th Amendment. If both the president and vice president were unable to serve, the Presidential Succession Act sets the order: the Speaker of the House, then the president pro tempore of the Senate, then cabinet secretaries starting with the Secretary of State.13Office of the Law Revision Counsel. 3 USC 19 – Vacancy in Offices of Both President and Vice President The Speaker or president pro tempore would have to resign their seat before taking over as acting president.
How Often It Actually Ends in Removal
Of the 22 federal officials the House has impeached, only eight have been convicted and removed, all of them judges. The rest were acquitted, resigned before trial, or had their cases dismissed. Three presidents have been impeached: Andrew Johnson in 1868, Bill Clinton in 1999, and Donald Trump in both 2020 and 2021, the only president impeached twice. None was convicted. The Senate fell one vote short of two-thirds in Johnson’s case and fell well short in the others.14U.S. Senate. Impeachment Cases Richard Nixon resigned in 1974 before the full House could vote, so he was never formally impeached.
The rarity of conviction is by design. The Framers set the two-thirds bar high enough that removal would demand broad bipartisan agreement rather than a partisan majority. That threshold has made the Senate trial less a courtroom proceeding than a political judgment about whether an official’s conduct is so far beyond the pale that two-thirds of senators are willing to end a career over it.