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   Congressional                                                            ______
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Impeachment Investigations: Law and Process



October 2, 2019
Speaker Pelosi announced last week that the House is moving forward with an official impeachment
inquiry. Although the Speaker's statement did not address precisely how the House will proceed, it is
noteworthy not only because the House has so rarely investigated a President for the purpose of
impeachment, but also because an impeachment investigation has usually been an early step in a
constitutional process that could ultimately result in the removal of the subject of the inquiry from office.
This Sidebar identifies procedural options for the House as it proceeds with an impeachment
investigation. The Sidebar also describes some of the ways in which an impeachment investigation, as
compared to a more traditional investigation for legislative or oversight purposes, might bolster the
House's ability to obtain, either voluntarily or through the courts, information from the executive branch.
The Sidebar also briefly describes possible future steps that might follow an impeachment inquiry,
including possible action by the Senate.

The Mechanics of House Impeachment Investigations
The House has a number of options for proceeding with its impeachment investigation, as the manner by
which the body chooses to implement its impeachment powers is textually and historically committed to
the House's own discretion. It could, adopt a resolution that explicitly authorizes the House Judiciary
Committee (or another committee) to conduct an investigation to determine whether there are sufficient
grounds to impeach the President and, if warranted, report articles of impeachment to the House. Or the
House could establish and empower a select investigative committee to handle this duty, perhaps giving
the body broad jurisdiction over all relevant aspects of the allegations against the President. In either case,
an authorizing resolution typically makes explicit that the investigating committee is acting with the
imprimatur of the House and exercising the full panoply of the House's constitutionally based
investigative and impeachment powers. Authorizing resolutions also provide a means for the House to
both direct the scope of an impeachment inquiry and, if desired, provide the investigating committee with
additional tools to enable a thorough and expeditious investigation. While House rules already provide
standing committees with several compulsory mechanisms to gather information, authorizing resolutions
for impeachment inquiries have generally conferred additional investigatory tools to a committee, such as
the authority to compel responses to interrogatories.
Rather than considering a resolution that expressly authorizes an impeachment inquiry of the President,
the House might take the position that such an inquiry is already underway, and opt to allow its

                                                                 Congressional Research Service
                                                                   https://crsreports.congress.gov
                                                                                      LSB10347

CRS Legal Sidebar
Prepared for Members and
Committees of Congress

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