DHS State and Local Government Partnerships and Coordination

The Department of Homeland Security operates through an extensive network of formal and informal arrangements with state governments, county agencies, municipal authorities, and tribal nations. These partnerships are not optional supplementary relationships — they constitute the operational backbone through which federal homeland security priorities translate into on-the-ground action across more than 90,000 local government jurisdictions in the United States. This page covers the legal and administrative structure of those partnerships, how coordination mechanisms function day to day, representative scenarios where federal-state collaboration activates, and the boundaries that determine which decisions rest with federal versus local authorities.

Definition and scope

DHS state and local government partnerships refer to the formal coordination frameworks, grant programs, information-sharing agreements, and joint operational structures through which the Department extends its mission into jurisdictions it does not directly govern. Because the U.S. constitutional system reserves significant law enforcement and emergency management authority to the states, DHS cannot mandate most protective actions at the local level. Instead, it operates through cooperative mechanisms authorized under the Homeland Security Act of 2002 (6 U.S.C. § 101 et seq.), which established the Department and explicitly directed it to build intergovernmental partnerships.

The scope of these partnerships spans five broad functional domains:

1. Emergency preparedness and disaster response — coordinated primarily through FEMA under the National Preparedness System and the National Response Framework
2. Information sharing and threat intelligence — operationalized through the DHS fusion center network, which includes 79 state and major urban area fusion centers recognized by DHS and the Department of Justice
3. Grant funding and capability building — administered through programs catalogued under DHS grants and programs, including the Homeland Security Grant Program (HSGP)
4. Critical infrastructure protection — coordinated between DHS's Cybersecurity and Infrastructure Security Agency (CISA) and state homeland security advisors
5. Immigration and border enforcement collaboration — structured through programs such as 287(g) agreements between U.S. Immigration and Customs Enforcement and local law enforcement agencies

How it works

The primary administrative interface between DHS and state governments runs through each state's designated Homeland Security Advisor (HSA), a governor-appointed official who serves as the formal liaison to federal DHS components. HSAs participate in the National Homeland Security Consortium and coordinate the flow of federal guidance, grant requirements, and operational protocols into state-level structures.

Below the HSA tier, coordination flows through three principal mechanisms:

Grants with compliance frameworks. The Homeland Security Grant Program, funded through congressional appropriations and administered by FEMA, allocates formula-based and competitive funds to states, which then sub-grant to local jurisdictions. States must submit annual investment justifications and threat and hazard identification and risk assessment (THIRA) documents to qualify for funding. For fiscal year 2023, Congress appropriated approximately $1.87 billion for FEMA preparedness grants (FEMA FY2023 Preparedness Grants), making grant compliance a significant lever for shaping local priorities.

Fusion centers and intelligence sharing. The DHS fusion center model places state-owned, state-operated intelligence hubs at the center of the Homeland Security Enterprise information sharing environment. DHS embeds intelligence officers and provides access to classified federal systems, while state and local agencies contribute situational awareness about localized threats. The Department of Homeland Security's Office of Intelligence and Analysis (DHS I&A) serves as the primary federal conduit for classified threat products to fusion centers.

Memoranda of Agreement and task forces. Joint operational structures such as the Border Enforcement Security Task Forces (BESTs) and Homeland Security Investigations task forces formalize the participation of local law enforcement in federal operations under written agreements that specify jurisdiction, authority, and liability.

Common scenarios

Disaster declarations. When a governor requests a Presidential Major Disaster Declaration under the Stafford Act (42 U.S.C. § 5121 et seq.), FEMA activates coordinated federal-state response structures. State emergency management agencies operate as the primary counterpart, managing resource requests through the Emergency Management Assistance Compact (EMAC) and the FEMA Unified Coordination structure.

Cybersecurity incident response. CISA, the DHS component responsible for the cybersecurity mission, provides no-cost cybersecurity assessments, incident response support, and vulnerability scanning to state and local governments under its State, Local, Tribal, and Territorial (SLTT) programs. When a ransomware attack strikes a municipal water utility or county election system, CISA's SLTT engagement team is the standard federal entry point.

Active threat and terrorism prevention. When DHS threat intelligence identifies a credible threat with a geographic nexus, the relevant fusion center and the FBI's Joint Terrorism Task Force (JTTF) receive coordinated notification. Local law enforcement retains independent authority to act but operates within a shared operational picture developed with federal partners.

Immigration enforcement. Under 287(g) agreements authorized by the Immigration and Nationality Act, local law enforcement agencies that execute formal agreements with ICE may perform certain immigration enforcement functions. As of the agreements active in 2023, ICE maintained 287(g) task force and jail enforcement agreements with agencies across more than 30 states (ICE 287(g) Program).

Decision boundaries

The federal-state-local partnership structure rests on a fundamental distinction between federal advisory authority and state operational authority. DHS cannot direct a local police department to enforce federal immigration law absent a formal 287(g) agreement. It cannot compel a state to adopt specific building codes for critical infrastructure. It cannot override a governor's decision about how to allocate sub-granted HSGP funds within the state's approved investment plan.

What DHS controls is access to resources, intelligence systems, and federal operational frameworks. States and localities that decline to participate in specific programs — such as jurisdictions that have adopted sanctuary policies limiting cooperation with ICE — may do so lawfully, though they may forfeit access to certain federal funding streams depending on applicable statutory conditions.

A structural contrast clarifies the decision boundary: FEMA preparedness grants carry compliance requirements that shape local emergency management practices as a condition of funding, whereas CISA cybersecurity services to SLTT entities are voluntary and carry no compliance strings. The former uses financial leverage; the latter uses technical assistance as the incentive. Both reflect the same constitutional reality — that DHS operates as a partner and resource provider to subnational governments, not as a superior authority over them.

The full scope of DHS's organizational authorities, including the legislative foundation for these partnership structures, is documented through the DHS legal authority and legislation framework. For a broader orientation to how these partnerships fit within the Department's overall mission architecture, the DHS homepage provides navigational access to all major subject areas covered within this reference resource.