539. Withholding and redacting of evidence.

The Secretary of State1 may not rely upon closed material2 unless a special advocate has been appointed to represent the interests of the appellant or applicant3. Where the Secretary of State is required4 to serve on the appellant or applicant, or wishes to rely upon, closed material and a special advocate has been appointed, the Secretary of State must file with the Commission and serve on the special advocate a copy of the closed material, if he has not already done so5, a statement of his reasons for objecting to its disclosure6 and, if and to the extent that