The Falls Church, Va.-based Altegrity company will also provide DHS with management and administrative support services, according to the Post.
In October, USIS announced it won a prime position on an estimated $2.45 billion contract from the Office of Personnel Management to provide fieldwork for federal background investigations.
Work over the five-year period will occur in all 50 states and U.S. territories.
USIS also holds a separate $288 million contract with OPM, announced in June, to maintain case files and provide pre-reviews of case files.
The company will also prepare case files, data entry, microfilm and imaging services.