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DHS Major Information Systems (MIS)

The Electronic Freedom of Information Act of 1996 requires agencies to make an index of their major information systems and descriptions of those systems. OMB Circular A-130 defines “major information system” as “an information system that requires special management attention because of its importance to an agency mission; its high development, operating, or maintenance costs; or its significant role in the administration of agency programs, finances, property, or other resources.”  DHS has evaluated this definition and have determined that this definition is synonymous with the definition for a ‘high-value asset” as defined in OMB Guidance, particularly OMB M-19-03. 
The Department of Homeland Security’s Major Information Systems are listed by system name in the list available by the links below.  They are divided into two lists – one where the system contains personally identifiable information and the system is described in a DHS Privacy Impact Assessment and/or System of Records Notice, and one where the system does not contain PII and the system is further defined. 

NOTICE: DHS strives to provide equal access to information and data to people with disabilities in accordance with Section 508 of the Rehabilitation Act of 1973. Not all of the documents on this page are fully Section 508 compliant. If you have problems with any of the documents on this page and need assistance, please contact the FOIA Office at 202-343-1743.

Attachment Ext. Size Date
DHS Major Information Systems- Listing of Non-PII Systems- May 2022 PDF 46.02 KB 05/16/2022
DHS Major Information Systems- Listing of PII Systems- May 2022 PDF 273.93 KB 05/16/2022
Last Updated: 05/17/2022
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