Department of Homeland Security

What Visitors Should Know

Learn how the Department of Homeland Security works, what public-facing services, records, or data it provides, and where visitors can verify official source links.

The Department of Homeland Security coordinates border security, immigration services, emergency management, cybersecurity, transportation security, disaster response, infrastructure protection, and homeland-security operations through multiple components. This profile explains the agency in practical terms: what it is responsible for, how people may encounter it, and which public-facing records or services matter most.

Visitors may use DHS sources for immigration case tools, TSA travel information, FEMA disaster assistance, cybersecurity alerts, customs and border information, emergency preparedness, and public notices. Use DHS.gov, USCIS, FEMA, TSA, CBP, CISA, ICE, Federal Register notices, and official service portals to verify current forms, eligibility rules, alerts, and source records. When legal precision, benefits, applications, deadlines, or compliance rules matter, use those official sources before relying on a summary.

What Homeland Security Does

The Department of Homeland Security coordinates border security, immigration services, emergency management, cybersecurity, transportation security, disaster response, infrastructure protection, and homeland-security operations through multiple components. Visitors may use DHS sources for immigration case tools, TSA travel information, FEMA disaster assistance, cybersecurity alerts, customs and border information, emergency preparedness, and public notices. Use official source links for current forms, deadlines, eligibility rules, data, legal notices, public records, and contact channels.

Public ServicesFind immigration, travel, disaster, cybersecurity, and border-security resources.

Benefits and AssistanceUse FEMA disaster assistance, preparedness, and mitigation information.

Programs and OfficesReview TSA, CBP, USCIS, ICE, and CISA official service pages.

Data and RecordsVerify current DHS forms, notices, deadlines, rules, and public records.

How It Fits In Government

Executive DepartmentDepartment of Homeland Security is a Cabinet-level executive department. Its leader is nominated by the President, usually confirmed by the Senate, and responsible for carrying out laws in a major policy area.

Public AccountabilityIts work may appear through official notices, regulations, reports, data systems, service portals, hearings, inspections, grants, enforcement actions, or public contact channels.

Where To VerifyUse the official agency website first for current forms, deadlines, leadership, program rules, contact information, and legal notices.

Major Bureaus and Operating Components

Federal Emergency Management AgencyFederal Emergency Management Agency helps people and communities prepare for, respond to, recover from, and reduce the risk of disasters through assistance programs, emergency coordination, mitigation grants, flood insurance, and preparedness resources. Visitors may use FEMA sources to apply for disaster assistance, find recovery centers, check declared…Transportation Security AdministrationTransportation Security Administration protects transportation systems through passenger and baggage screening, aviation security rules, TSA PreCheck, transportation worker vetting, surface transportation security, and public travel guidance. Visitors may use TSA sources to check airport screening rules, apply for TSA PreCheck, understand permitted…U.S. Citizenship and Immigration ServicesU.S. Citizenship and Immigration Services administers many immigration benefit requests, including citizenship, green cards, work authorization, immigration forms, case status tools, appointments, humanitarian programs, and naturalization resources. Visitors may use USCIS sources to file forms, check case status, find fees, prepare for citizenship,…U.S. Customs and Border ProtectionU.S. Customs and Border Protection handles border inspections, customs enforcement, trade facilitation, travel entry rules, trusted traveler programs, import requirements, agriculture inspections, and border-security operations. Visitors may use CBP sources to understand entry requirements, check wait times, use Global Entry or other trusted traveler…U.S. Immigration and Customs EnforcementU.S. Immigration and Customs Enforcement conducts homeland security investigations, immigration enforcement, detention management, removal operations, customs-related investigations, victim assistance, and selected public reporting and locator tools. Visitors may use ICE sources to find detention and detainee locator information, report tips, review…

Public Service Guide

How visitors may use Homeland Security

This profile is designed to help visitors find practical government services, not just describe the agency in the abstract. Start with the official sources below, then use related public service links when a specific form, record, benefit, complaint, data tool, or office is needed.

Public Services Visitors May Need

FEMAOpen official source USCISOpen official source TSAOpen official source Homeland Security official websiteOpen official source Federal Register documentsOpen official source Regulations.gov searchOpen official source USAspending searchOpen official source FOIA.gov agency searchOpen official source

Budget, Records, and Public Accountability

Agency work can also show up in official records: rules, notices, spending data, public comments, reports, grants, enforcement actions, or Act, the federal law that lets the public request many agency records.">FOIA/public-record systems. Use these sources to move from a plain-English profile to the official record trail.

Federal Register documentsSearch official notices, rules, proposed rules, and presidential or agency documents.Regulations.gov docketsFind rulemaking dockets, supporting materials, and public comment opportunities.USAspending searchSearch federal awards, grants, contracts, loans, and spending records.FOIA.gov agency searchFind public-record request routes and FOIA contact information.

Learn More

Official records and updatesLook for current announcements, notices, rulemaking, public data, forms, and contact information directly from official sources.

Related servicesMany agency services connect to benefits, taxes, passports, safety, records, grants, complaints, inspections, research, or public information requests.

When to use this profileUse this page to understand what the agency does, then follow official links for applications, deadlines, eligibility rules, data, and legal text.