H
HHS (DHHS) - Department of Health and Human Services (federal agency created in May 1980 with oversight of the Medicare and Medicaid programs and, through the HIPAA and HITECH Acts, given responsibility for providing guidance and standards relating to the privacy and security of patient health information)
HS - Department of Homeland Security (DHS) (federal agency established in November 2002 to consolidate the work of different federal agencies under one organization and coordinate security activities relating to threats to the U.S.)
HSARPA - Homeland Security Advanced Research Projects Agency (Homeland Security agency overseeing research grants and contracts for technology and testing)
HUD - Department of Housing and Urban Development (cabinet-level federal agency, founded in 1965, which is responsible for housing development in the United States through subsidies for low- and moderate-income housing and urban renewal projects, often through loan guarantees)
HR - U.S. House of Representatives (lower house of the U.S. Congress)
H.R. - U.S. House of Representatives bill (format used to designate federal legislation or reports originating in the U.S. House of Representatives)