The Mayor of the District of Columbia, the Chairman of the Council of the District of Columbia, and the members of the Council of the District of Columbia may administer oaths as part of their official responsibilities. No fee shall be collected for the administration of such oaths, and the power to administer such oaths shall not be utilized for personal purposes.
D.C. Code § 1-301.22
Council's authority, power to investigate, issue subpoenas, and administer oaths, see § 1-204.13. .