Before the Senate shall proceed to consider the articles of impeachment, it shall organize itself into a court of impeachment, as provided herein, and every Senator present shall take the following oath or affirmation:
"I do solemnly swear (or affirm) that I will faithfully and impartially try the impeachment against A. B., and do justice according to the law and the evidence."
Added by Laws 1915, c. 131, § 14, emerg. eff. March 12, 1915.