Under Secretary of Homeland Security for Science and Technology

The Under Secretary of Homeland Security for Science and Technology is a high level civilian official in the United States Department of Homeland Security. The Under Secretary, as head of the Science and Technology Directorate at DHS, is the principal staff assistant and adviser to both the Secretary of Homeland Security and the Deputy Secretary of Homeland Security for all DHS technological research.

United States Under Secretary of Homeland Security for Science and Technology
Incumbent Julie S. Brewer (acting) since January 20, 2025
Constituting instrument	6 U.S.C. § 113
Formation	2003
Website	www.dhs.gov/science-and-technology

The Under Secretary is appointed from civilian life by the president with the consent of the Senate to serve at the pleasure of the president.

Overview

The Under Secretary of Homeland Security for Science and Technology is responsible for scientific and technological research designed to provide new security and resilience innovations.

Reporting officials

Officials reporting to the USHS(S&T) include:

• Deputy Under Secretary of Homeland Security for Science and Technology
• Director of Support to the Homeland Security Enterprise and First Responders
• Director
  • Homeland Security Advanced Research Projects Agency
    • Borders and Maritime Security Division
    • Chemical and Biological Defense Division
    • Cyber Security Division
    • Explosive Division
    • Resilient Systems Division
• Director of CDS Capability Development Support
• Director of Research and Development Partnership

Budget

DHS Science and Technology Budget, FY11-16 ($ in thousands) ^[1]

Line Item	FY11 Actual	FY12 Actual	FY13 Actual	FY14 Actual	FY15 Actual	FY16 Request
Management and Administration	140,918	135,000	126,519	129,000	129,993	132,115
Acquisition and Operations Support	47,080	54,154	45,991	41,703	41,703	47,102
Laboratory Facilities	140,000	176,500	158,083	547,785	434,989	133,921
Research, Development, and Innovation	459,690	265,783	425,294	462,000	457,499	434,850
University Programs	39,890	36,563	38,339	39,724	39,724	31,000
Total Budget	827,578	668,000	794,226	1,220,212	1,103,908	778,988