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              Congressional                                                      ____
      C R Research Service






The U.S. Capitol Police: Brief Background



Updated July 25, 2023

U.S.  Capitol   Police   (USCP)

The U.S. Capitol Police is a department within the legislative branch with security, protection, and
administrative responsibilities. The USCP is responsible for law enforcement and security within the
Capitol Complex, including the U.S. Capitol building, the Capitol Visitor Center, Capitol grounds, the
House and Senate office buildings, the U.S. Botanic Garden, Capitol Police buildings, Library of
Congress buildings, and adjacent grounds.
The USCP  performs these roles in coordination with the House and Senate Sergeants at Arms. The House
and Senate Sergeants at Arms are charged with maintaining order in their chambers, and they each
perform a number of law enforcement, security-related, decorum, and protocol duties. The House and
Senate have each had an elected Sergeant at Arms since 1789.

Capitol   Police   Powers and Duties

The duties and responsibilities of the Capitol Police have developed over time and are set forth in several
sources, chief among them the US. Code (in particular, but not limited to, Chapter 29, subchapter II, of
Title 2). Additional authorities may be found in policies, regulations, and guidelines issued by the Senate
Committee on Rules and Administration and the Committee on House Administration; the Rules of the
House of Representatives and Senate; policies adopted by the Capitol Police Board; and custom and
precedent. Additional duties of the Capitol Police may be defined by the committees on appropriations in
reports accompanying the annual appropriations bills. The most recent legislative change, the Capitol
Police Emergency Assistance Act of 2021 (P.L. 117-77, enacted December 22, 2021), amended the
procedure by which the USCP can request emergency assistance from executive departments and
agencies (2 U.S.C. §1970).
In addition to responsibilities on the Capitol campus, the Capitol Police also provide protection for
Members  of the House and Senate leadership, protect additional Members based on a risk-based analysis,
collaborate with the House and Senate Sergeants at Arms to assess Members' security in their states or
districts (including office security), coordinate with local law enforcement regarding threats or in
response to investigations, and provide protection for certain off-campus events, including the presidential
nominating conventions. According to a USCP news release, In 2022, the USCP Threat Assessment
Section (TAS) investigated a total of 7,501 cases.
                                                                Congressional Research Service
                                                                  https://crsreports.congress.gov
                                                                                      IN11570

CRS INSIGHT
Prepared for Members and
Committees of Congress

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