(a)(1) Upon institution of an investigation, the Commission shall serve:

(i) Copies of the nonconfidential version of the complaint, the nonconfidential exhibits, and the notice of investigation upon each respondent; and

(ii) Copies of the nonconfidential version of the complaint and the notice of investigation upon the embassy in Washington, DC, of the country in which each proposed respondent is located as indicated in the complaint.

(2) If the Commission institutes temporary relief proceedings, upon institution of an investigation, the Commission shall also serve copies of the nonconfidential version of the motion for temporary relief, the nonconfidential version of the complaint, and the notice of investigation upon each respondent.

(3) The Commission shall serve copies of the notice of investigation upon the U.S. Department of Health and Human Services, the U.S. Department of Justice, the Federal Trade Commission, the U.S. Customs Service, and such other agencies and departments as the Commission considers appropriate.

(b) With leave from the presiding administrative law judge, a complainant may attempt to effect personal service of the complaint and notice of investigation upon a respondent, if the Secretary's efforts to serve the respondent have been unsuccessful. If the complainant succeeds in serving the respondent by personal service, the complainant must notify the administrative law judge and file proof of such service with the Secretary.