(a) Any party may request a hearing by submitted a written request to the Under Secretary within 30 days after the date of service of the charging letter. However, the Deputy Under Secretary may request a hearing only if the interests of justice would thereby be served.

(b) Upon timely receipt of a request for a hearing, and unless the party requesting a hearing requests that the Under Secretary not appoint a presiding official, the Under Secretary will appoint a presiding official to conduct the hearing and render an initial decision.