Definition
A court of impeachment is a legislative body, or a body constituted from a legislature, that sits in judgment on public officials charged through the impeachment process. It receives articles of impeachment passed by a separate accusatory body (typically a lower legislative chamber), conducts a trial, and renders a verdict on whether the charged officer should be removed from office, disqualified from future office, or both.
In the United States federal system, the Senate serves as the court of impeachment: the House of Representatives votes articles of impeachment (acting as accuser), and the Senate then convenes as the trial body. State systems vary, but the pattern is broadly similar — a lower chamber accuses, an upper chamber tries.
The term emphasizes the judicial character of the proceeding. Although composed of legislators rather than judges, the body acts in a quasi-judicial capacity, administering oaths, weighing evidence, and rendering a verdict. The Chief Justice of the United States presides when a President is tried, underscoring the deliberate separation of the trial function from ordinary Senate business.
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Common Confusion
COURT OF IMPEACHMENT vs. HOUSE (ARTICLES OF IMPEACHMENT): These are distinct constitutional actors. The House impeaches — that is, it formally accuses. The Senate serves as the court of impeachment — that is, it tries. An officer is not removed simply by being impeached; impeachment is the charge, not the conviction. Conflating the two produces the common misstatement that impeachment equals removal. A sitting officer who has been impeached by the House but acquitted by the Senate has not been removed and retains office.
COURT OF IMPEACHMENT vs. ORDINARY CRIMINAL TRIAL: Impeachment is not a criminal proceeding. The court of impeachment cannot impose prison sentences or fines. Its sole sanctions are removal from office and disqualification from future office-holding. Separate criminal liability for the same underlying conduct, if any, must be pursued in ordinary courts.
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Why It Matters in Research
The phrase "court of impeachment" appears with some frequency in nineteenth-century American legal materials and in constitutional commentary of that era, but has largely given way in modern usage to simpler formulations ("the Senate sitting as a court of impeachment," or simply "the Senate trial"). Researchers working in pre-twentieth-century sources — including constitutional debates, treatises, and newspaper accounts of impeachment proceedings — will encounter the term as a standard descriptor and should recognize it as referring specifically to the trial body, not to the impeachment process as a whole.
A key research trap: the term's meaning is stable, but its application varies by jurisdiction. In several U.S. states, the body constituted as a court of impeachment is not simply the state senate sitting alone. Some states convene a special court of impeachment composed of the senate combined with the judges of the highest court; others empower a joint legislative committee. Researchers examining state impeachment proceedings must identify the specific constitutional mechanism for that jurisdiction rather than assuming the federal model applies.
A second trap involves the distinction between impeachment in the constitutional sense (removal of officers) and impeachment in the evidentiary sense (discrediting a witness). These are entirely separate legal concepts that happen to share a word. A researcher following citation trails from "impeachment" in evidence law will not arrive at materials relevant to a court of impeachment, and vice versa. The encyclopedia entries linked below address witness impeachment, not the removal proceeding.
For historical depth, the most productive corpus connections are constitutional law commentaries (Story's Commentaries on the Constitution, Rawle's View of the Constitution), records of the federal and state constitutional conventions, and the official records of Senate impeachment trials, which are published as Senate documents.
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Historical Dictionary Support
Rapalje & Lawrence define "court of impeachment" straightforwardly as the body before which impeachment proceedings are conducted, identifying the U.S. Senate as the primary American example. The entry is concise and descriptive rather than analytical, reflecting the relatively settled character of the constitutional structure by the time of publication.
What the historical dictionary does not address is the procedural complexity that has developed over time — standing rules governing Senate impeachment trials, the contested question of whether an officer who has already resigned can still be tried, and the role of the presiding officer in making procedural rulings. These are matters researchers must pursue through constitutional scholarship and the official records of specific proceedings rather than relying on dictionary definitions.
The term appears to be more common in American usage than in English legal writing. English constitutional law developed the comparable function through the House of Lords sitting on impeachments, and English legal dictionaries tend to describe that body directly rather than using "court of impeachment" as a term of art.
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Jurisdictional Note
The structure of the court of impeachment varies significantly among U.S. states. While the federal model (Senate as trial body) is the most common template, several states provide for hybrid bodies — for example, the New York Court for the Trial of Impeachments, which historically combined senators with judges of the Court of Appeals. Researchers analyzing state impeachment proceedings should consult the relevant state constitution directly before assuming structural equivalence with the federal model.
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Encyclopedia Cross-Reference
The matching encyclopedia entries address witness impeachment in civil procedure and evidence (Rules 608, 609, 613; contradiction doctrine) — a distinct legal concept that shares vocabulary but no substantive connection with the court of impeachment. No Law Mind Encyclopedia entry directly addresses the constitutional court of impeachment. Researchers should consult constitutional law resources in the corpus for that subject.
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