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If a federal official commits a crime or otherwise acts improperly, the House of Representatives may impeach—formally charge—that official. If the official subsequently is convicted in a Senate impeachment trial, he is removed from office.

Origins and Development

The Senate's Impeachment Role

Constitutional Authority   Article I, section 2, clause 5   Article I, section 3, clause 6 & 7
            Impeachment and Removal (CRS) (PDF)
            Impeachment and the Constitution (CRS) (PDF)

Grounds for Impeachment

Article II, section 4
Impeachment Grounds: A Selection of Collected Materials (CRS) (PDF)
Impeachment Grounds: Part 2: Selected Constitutional Convention Materials (CRS) (PDF)

Process and Rules

The First Impeachment January 14, 1799
Senate Impeachment Trial Powers Upheld Jan 13, 1993
The Impeachment Process: An Interview with Senate Parliamentarian Floyd M. Riddick (PDF)

Impeachment Trials in the Senate

Cabinet Members

War Secretary's Impeachment Trial May, 1876

Judicial Impeachments

Senate tries Supreme Court Justice Nov 30, 1804

Presidential Impeachment

Andrew Johnson
The Impeachment of Andrew Johnson: President of the United States
The Senate Votes on Presidential Impeachment May 16, 1868
”Scene from the impeachment of President Andrew Johnson. . .”
William Jefferson Clinton
Senate Publications Related to the Impeachment of William Jefferson Clinton (GPO-govInfo) (PDF)
Donald John Trump
Senate Publications Related to the Impeachment of Donald John Trump (GPO-govInfo)