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              Congressional                                              ______
            *Research Service
 ~~~ ~~~nforming the legislaive debate since 1914____________________




 Recent Executive Branch Actions on

 Immigration (Part 1)



 May   1, 2025

 Since taking office on January 20, 2025, President Trump and his Administration have issued numerous
 executive actions and initiatives related to the enforcement of federal immigration laws. These actions
 address a range of issues, including the suspension of entry of aliens at the southern border, the processing
 of applicants for admission, border security, refugee admissions, immigration enforcement in the interior
 of the United States, public safety and national security, citizenship under the Fourteenth Amendment of
the U.S. Constitution, and other topics. Some actions reinstate previous policies and initiatives that were
implemented during the first Trump Administration. This Legal Sidebar provides an overview of select
executive actions and directives issued to date that are related to the southern border, applicants for
admission, border security, and the admission of refugees. It is the first in a two-part series. The second
Sidebar-which  is focused on executive actions related to interior immigration enforcement, public safety
and national security, and eligibility for U.S. citizenship-is available here.


Presidential Proclamation Restricting Entry into the

United States in Response to an Invasion

On January 20, 2025, President Trump issued the presidential proclamation Guaranteeing the States
Protection Against Invasion. The proclamation directs the federal government to take measures to fulfill
its obligations to the States under Article IV, Section 4, of the Constitution, commonly referred to as the
Guarantee Clause or the Invasion Clause. The clause provides, The United States shall guarantee to
every State in this Union a Republican Form of Government, and shall protect each of them against
Invasion; and on Application of the Legislature, or of the Executive (when the Legislature cannot be
convened) against domestic Violence. Invoking the Guarantee Clause and the President's independent
constitutional authority, along with authorities delegated by immigration statute, the proclamation
contains a mixture of specific actions and general directives.
Section 1 of the proclamation suspends the entry into the United States of aliens engaged in the invasion
across the southern border until a finding that the invasion at the southern border has ceased. This
entry restriction relies on authorities conferred under 8 U.S.C. § 1182(f), which authorizes the President
by proclamation to suspend the entry of any aliens or classes of aliens whose entry he finds would be
                                                                Congressional Research Service
                                                                  https://crsreports.congress.gov
                                                                                     LSB11299

CRS Legal Sidebar
Prepared for Members and
Committees of Congress

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