under this subsection may be served in any judicial district in which the State, local, Tribal, or territorial agency or department may be found. (d) Nondisclosure requirement (1) In general If the Secretary certifies that otherwise there may result a danger to the national security of the United States, no person may disclose to any other person that a subpoena was received or information was provided pursuant to this section, other than to— (A) those persons to whom such disclosure is necessary in order to comply with such subpoena