The Publication Library contains guidance and policy papers, reports, strategies, program regulations, guidelines, brochures and more.
To search the DHS Publications Library, please enter search terms below.
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Finding of Mass Influx of Aliens
On January 20, 2025, the President issued Presidential Proclamation, Guaranteeing the States Protection Against Invasion. That Presidential Proclamation recognizes an "ongoing influx of illegal aliens across the southern border of the United States." In support of that, the order notes that "[o]ver the last 4 years, at least 8 million illegal aliens were encountered along the southern border of the United States, and countless millions more evaded detection and illegally entered the United States."
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Guidance Regarding How to Exercise Enforcement Discretion
This memorandum provides guidance regarding how to exercise enforcement discretion in implementing the policies regarding the scope of the parole statute and expedited removal.
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Online Enticement Informational Bulletin
Learn more about Online Enticement below.
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Behavioral Threat Assessment and Management in Practice
The Center for Prevention Programs and Partnerships (CP3) has created this prevention resource to provide education on behavioral threat assessment and management (BTAM) and its benefits in targeted violence and terrorism prevention (TVTP).
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Community Lifeline Status System Fact Sheet
The Community Lifeline Status System is an effort led by DHS S&T to develop a reporting construct to provide the emergency management community with a comprehensive systematic approach to lifeline status planning, monitoring, and reporting across areas impacted by a disaster.
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S&T Maritime Safety and Security Fact Sheet
The Science and Technology Directorate's Maritime Safety and Security Program develops, evaluates, and transitions technical capabilities to enhance U.S. maritime border safety and security by safeguarding lawful trade and travel to help prevent illegal use of the maritime environment to transport illicit goods or people, and to enhance the safety and resilience of the Maritime Transportation System.
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Preventing Targeted Violence Saves Lives — and Money
This publication illustrates estimated costs of targeted violence and compares those costs to those of the Center for Prevention Programs and Partnerships Targeted Violence and Terrorism Prevention Grant Program, which supports training programs to help people headed down a path toward violence.
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DHS-FCC Joint Jammer Infographic
DHS and the FCC have released a Joint Jammer Infographic that informs public safety officials of the effects of jamming and suggested mitigation tactics, and outlines how to report suspected jamming to the FCC.
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S&T Organizational Chart
S&T’s mission is to enable effective, efficient, and secure operations across all homeland security missions by applying scientific, engineering, analytic, and innovative approaches to deliver timely solutions and support departmental acquisitions.
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2024 Forum Presentations
The 2024 Joint IT and Software Cost Forum (JITSWCF) presentations.