"Department of Homeland Security records are subject to release under the Freedom of Information Act (FOIA). Enacted in 1966 and amended several times, FOIA mandates that Federal executive branch agencies release certain information to the public upon request, unless the information falls within one of nine exemptions which protect certain interests, such as personal privacy or national security. The act also includes timetables within which Federal agencies must respond to FOIA requests. Generally, agencies must release responses to FOIA requests within 20 days, unless certain specific circumstances allow for an extension. In addition, the Department of Justice has interpreted the statute to mean that agencies may not prevent release of information simply because it is embarrassing. We conducted this review in response to a June 2015 request from the Senate Committee on Homeland Security and Governmental Affairs that we determine whether political appointees were involved in DHS' FOIA response process and delayed FOIA releases or inappropriately withheld information."
Department of Homeland Security, Office of Inspector General, Report No. OIG-17-116-VR
Department of Homeland Security, Office of the Inspector General: https://www.oig.dhs.gov/