The FY2027 President's Budget requests $143.6M for Mission Support, within Homeland Security's Operations and Support account. That is down 12% on the FY2026 figure of $163.7M, which is a continuing-resolution annualized figure, not an enacted appropriation.
FY2025–FY2027
| Fiscal year | Basis | Amount |
|---|---|---|
| FY2025 | enacted | $163.7M |
| FY2026 | CR annualized | $163.7M |
| FY2027 | request | $143.6M |
The prior-year column is a CR annualized figure — the rate a continuing resolution funds at, not an enacted appropriation. The two are different numbers and are not interchangeable. Bases are separate columns and are never summed into one figure.
Homeland Security discretionary budget authority
From the OMB Public Budget Database — clean, summable, and the figure to cite for an agency total. It is the whole of Homeland Security's discretionary request, not a total of the parsed lines above, and this page never adds the two together.
What this funds
Science and Technology Directorate Operations and Support Program Change 1 - 2026 AOA-Federally Funded Research and Development Center: The FY 2027 Budget includes a decrease for the Federally Funded Research and Development Center (FFRDC) Program Management Office The decrease in contract support will not impact the FFRDC PMO's operations or it's liaison role between DHS Components and the HSE for future Program Change 2 - 2026 Artificial Intelligence: AI Testing and Evaluation: The FY 2027 Budget includes an increase of one GS-15 Artificial Intelligence (AI) subject matter expert to expand AI governance and support Chief This increase funds a GS-15 Artificial Intelligence (AI) subject matter expert to strengthen AI governance and support Chief AI Officers (CAIOs) in meeting the requirements of Executive Order 14179 on the use of AI. Serving as a Science Advisor to the Department and S&T, this expert will ensure the responsible and safe integration of AI into DHS missions. Based in S&T's Advanced Computing Technology Center, this position will oversee solutions to meet the priority needs of DHS and the HSE. Science and Technology Directorate Operations and Support The FY 2027 Budget includes a decrease in contract support for the Chief Information Office (CIO) IT services and the contract services supporting the Contract Acquisition Program Support Office (CAPS). Funding will continue essential IT infrastructure, technical maintenance services, and acquisition support services critical to S&Ts R&D mission, such as assistance with procurement related documents, contract closeouts and processing of Interagency agreements. The FY 2027 Budget includes an increase of $1.6M to prioritize advancing DHS's mission through Operational Analysis Services. Funding restores a portion of contract support for the System of Systems Operational Analytics (SoSOA) program, which was significantly reduced in the FY 2026 Budget, as well as provides for systematic enhancements to maintain optimal functionality. The increase will allow DHS operations in border security, immigration enforcement, law enforcement, and intelligence to continue data analysis and collaboration across HSE. Science and Technology Directorate Operations and Support The FY 2027 Budget includes an increase of $12.0M for the Office of SAFETY Act Implementation (OSAI). Funds will improve application processing and address the anticipated rise in demand for liability protections due to upcoming high-threat profile special events, to include Special Event Assessment Rating (SEAR) events, notably the 2028 Los Angeles Olympics and Paralympics (LA28). The SAFETY Act supports the development and deployment of anti-terrorism technologies by providing private industry with litigation and risk management tools. By encouraging private sector innovation, the SAFETY Act strengthens the protection of critical infrastructure, such as large venues and other soft targets, and stimulates investment in cutting-edge solutions that bolster the resilience of the Nation's most vital assets. The FY 2027 Budget includes an increase of $1.6M for the Technology Scouting and Transition (TST) project within the Technology Transition Support program to centralize resources, streamline processes, and enhance research and development outcomes across S&T activities. Funding will support the International Cooperative Program Office in strengthening cross-border law enforcement collaboration, countering China's influence, and expanding trials to improve access to emerging security technologies with global partners. Additional resources will enable the National Urban Security Technology Laboratory (NUSTL) to broaden its field assessments, technology evaluations, and user engagement, facilitating the deployment of effective technologies for first responder agencies across the nation. Science and Technology Directorate Operations and Support Program Change 7 - Laboratory Operations and Maintenance: The FY 2027 Budget includes an increase of $15.5M for Laboratory Operations and Maintenance. This increase will allow S&T to adequately fund operational and sustainment requirements to meet S&T and DHS priorities, as well as maintain operational capabilities, safety, and compliance with This funding increase supports the Transportation Security Laboratory (TSL) and the National Bioforensics Analysis and Countermeasures Center (NBACC) by sustaining critical infrastructure, ensuring BioSafety Level 4 containment at NBACC, and maintaining essential test and evaluation capabilities at TSL. S&T manages all aspects of NBACC and TSL operations, including utilities, physical security, and regulatory compliance. The Laboratory Operations budget has remained flat since the FY 2021 enacted level and has not accounted for inflationary cost increases, despite an average 2 percent annual rise in operating expenses for utilities, security services, and specialized laboratory equipment maintenance and replacement. Additional funding is urgently needed to address a backlog of deferred routine maintenance, which reduces the lifespan of critical assets. S&T has been operating at risk of equipment and infrastructure failure, which would be significantly more costly to replace than to maintain Furthermore, this increase provides funding for the Plum Island Animal Disease Center (PIADC) to maintain critical infrastructure, ensure BioSafety
Extracted from Science and Technology Directorate, p. 4. Verbatim; nothing here is paraphrased.
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