(a) The Commission may authorize its Chairman or Vice Chairman to issue subpoenas requiring the attendance and testimony of any person by deposition and to issue subpoenas duces tecum for the production of documentary or other tangible evidence in connection with a deposition or otherwise.

(b) If oral testimony is ordered to be taken by deposition or documents are ordered to be produced, the subpoena shall so state and shall advise the deponent or person subpoenaed that all testimony will be under oath. A deposition may be taken before any person having the power to administer oaths.

(c) The Federal Rules of Civil Procedure, Rule 30(e), shall govern the opportunity to review and sign depositions taken pursuant to this section.