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                informing the legislative debate since 1914___________________




Sanctuary Jurisdictions: Legal Overview



June   6, 2025

Some  state and local jurisdictions have adopted policies that limit their cooperation with federal agencies
charged with immigration enforcement. Some observers and policymakers describe these states and
municipalities as sanctuary jurisdictions, though there is no agreement as to whether the term applies to
a particular entity. Since taking office on January 20, 2025, President Trump has issued three executive
orders (EOs) relating to sanctuary jurisdictions: Protecting the American People Against Invasion,
Ending Taxpayer Subsidization of Open Borders, and Protecting American Communities from Criminal
Aliens. Since the EOs were issued, several lawsuits have been filed by various cities and states, as well as
by the Department of Justice (DOJ), relating to sanctuary policies. This Legal Sidebar provides a brief
overview on what may be considered to be a sanctuary jurisdiction and summarizes pending litigation.
This Sidebar also identifies several considerations for Congress. For further discussion regarding
sanctuary jurisdictions' policies, see this CRS In Focus.


What Is a Sanctuary Jurisdiction?

There is no legal definition in federal statute for what constitutes a sanctuary jurisdiction. Some
observers have used different methodologies to identify states or municipalities as sanctuary
jurisdictions. In addition, while some government entities have, at times, described themselves as
sanctuary jurisdictions, others have disputed being labeled as such, particularly when those jurisdictions
have authorized some degree of cooperation with federal immigration authorities.
One  recently issued EO defines a sanctuary jurisdiction as one that interferes with the lawful exercise
of Federal law enforcement operations. Another EO defines sanctuary jurisdictions as those that
obstruct the enforcement of Federal immigration laws. The Attorney General issued a memorandum on
February 5, 2025, that defines sanctuary jurisdictions as those that refuse to comply with 8 U.S.C. §
1373, or willfully fail to comply with other applicable federal immigration laws.
Jurisdictions described by observers as having sanctuary policies typically limit state or local law
enforcement assistance with federal immigration authorities in enforcing civil violations of federal
immigration law that would render aliens removable from the United States. Jurisdictions that restrict
state or local participation in civil immigration enforcement activities may still permit state or local law
enforcement to assist in enforcing criminal violations of federal immigration law. Some measures adopted
by state and local governments that bar police from assisting in the enforcement of federal criminal

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 CRS Legal Sidebar
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