(a) The following individuals may administer oaths to testifying witnesses:
(1) the president of the senate;
(2) the speaker of the house;
(3) the chairman or acting chairman of a standing or special committee; and
(4) the chairman or acting chairman of a joint committee.
(b) If circumstances require, a member of either house may administer an oath to a witness testifying on a matter pending in the member's house or in a committee of that house.