8 C.F.R. § 236.6
No person, including any state or local government entity or any privately operated detention facility, that houses, maintains, provides services to, or otherwise holds any detainee on behalf of the Service (whether by contract or otherwise), and no other person who by virtue of any official or contractual relationship with such person obtains information relating to any detainee, shall disclose or otherwise permit to be made public the name of, or other information relating to, such detainee. Such information shall be under the control of the Service and shall be subject to public disclosure only pursuant to the provisions of applicable federal laws, regulations and executive orders. Insofar as any documents or other records contain such information, such documents shall not be public records. This section applies to all persons and information identified or described in it, regardless of when such persons obtained such information, and applies to all requests for public disclosure of such information, including requests that are the subject of proceedings pending as of April 17, 2002.
8 C.F.R. §236.6