US Code
CHAPTER 2— ORGANIZATION OF CONGRESS
§ 24. Secretary of Senate or assistant secretary may administer oaths

The Secretary of the Senate, and the assistant secretary thereof, shall, respectively, have power to administer any oath or affirmation required by law, or by the rules or orders of the Senate, to be taken by any officer of the Senate, and to any witness produced before it.

Structure US Code

US Code

Title 2— THE CONGRESS

CHAPTER 2— ORGANIZATION OF CONGRESS

§ 21. Oath of Senators

§ 22. Oath of President of Senate

§ 23. Presiding officer of Senate may administer oaths

§ 24. Secretary of Senate or assistant secretary may administer oaths

§ 25. Oath of Speaker, Members, and Delegates

§ 25a. Delegate to House of Representatives from District of Columbia

§ 25b. Repealed. , ,

§ 26. Roll of Representatives-elect

§ 27. Change of place of meeting

§ 28. Parliamentary precedents of House of Representatives

§ 28a. Compilation of the Precedents of House of Representatives; date of completion; biennial update; printing and availability of copies

§ 28b. Printing and binding as public document of Precedents of House of Representatives; number of sets authorized

§ 28c. Distribution of Precedents by Director of the Government Publishing Office

§ 28d. Distribution of Precedents by Director of the Government Publishing Office for official use; particular distribution; marking and ownership of sets

§ 28e. Distribution of Precedents by Joint Committee on Printing of surplus sets;  additional printing, etc., of sets under authority of Joint Committee

§ 29. Condensed and simplified versions of House precedents; other useful materials in summary form; form and distribution to Members of Congress, Resident Commissioner from Puerto Rico, and others; appointment and compensation of personnel; utilization of services of personnel of Federal agencies

§ 29a. Early organization of House of Representatives

§§ 29b, 29c. Omitted

§ 29d. Transferred

§ 30. Term of service of Members of Congress as trustees or directors of corporations or institutions appropriated for

§ 30a. Jury duty exemption of elected officials of legislative branch

§ 30b. Notice of objecting to proceeding