Under regulations prescribed by the Secretary, amounts appropriated to the Department of Homeland Security are available to install, repair, and maintain telephone wiring in residences owned or leased by the United States Government and, if necessary for national defense purposes in other private residences.
14 U.S. Code § 669. Telephone installation and charges
2002—Pub. L. 107–296 substituted “of Homeland Security” for “of Transportation”.