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      ''Congressional_______
      A ~ Research Service






The President's Authority to Use the National

Guard or the Armed Forces to Secure the

Border



Updated June 15, 2023

On May  2, 2023, the Biden Administration announced that Secretary of Defense Lloyd Austin approved a
request from Secretary of Homeland Security Alejandro Mayorkas to send an additional 1,500 active-duty
members of the Armed Forces to assist U.S. Customs and Border Protection (CBP) agents with a potential
influx of migrants after pandemic-era health restrictions ended in May 2023. (This figure does not include
the thousands of Texas National Guard troops deployed to the border as part of Texas's Operation Lone
Star.) The federal deployment is to last up to 90 days and add to the 2,500 National Guard members
already deployed to the border with Mexico. The Department of Defense (DOD) said the troops will
provide ground-based detection and monitoring, data entry, and warehouse support and will not
directly participate in law enforcement activities. This Sidebar addresses precedent for deploying troops
to the border and the President's legal authorities to use the National Guard or the Armed Forces to assist
in securing the southwestern border.

Precedent

There is precedent for deploying National Guard units to the southwestern border to assist with
immigration control. President Trump deployed units there in April 2018 to stop the flow of deadly
drugs and other contraband, gang members and other criminals, and illegal aliens pursuant to Title 32
authority. (In Title 32 status, National Guard members remain under the control of the governors of
their home states and are not considered to be performing active-duty service as part of the regular Armed
Forces. Mobilization of National Guard members under Title 10 differs from mobilization under Title 32
in a number of ways.) President Trump also ordered the Pentagon to deploy active-duty troops to the
southwest border in October 2018. The Pentagon reportedly sent 5,800 soldiers to support the border
mission.
From 2006 to 2008, President George W. Bush called on the National Guard to participate in Operation
Jump Start, in which National Guard troops were called to duty to assist CBP to secure the southwestern
border. National Guard members participating in this operation did not serve in a direct law enforcement
role but rather reinforced the U.S. Border Patrol, including by performing missions involving
                                                               Congressional Research Service
                                                               https://crsreports.congress.gov
                                                                                   LSB10121

CRS INSIGHT
Prepared for Members and
Committees of Congress

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