(25 ILCS 5/5)
(from Ch. 63, par. 5)
In all cases of trials of impeachment, or other trials before the
senate, the president, secretary, or any member of the senate, shall have
power to administer oaths or affirmations to the members, witnesses, or any
other person required to be sworn.
(Source: R.S. 1874, p. 555.)