The Constitution of the State of Hawaii Article III, § 18

Each house may punish by fine, or by imprisonment not exceeding thirty days, any person not a member of either house who shall be guilty of disrespect of such house by any disorderly or contemptuous behavior in its presence or that of any committee thereof;  or who shall, on account of the exercise of any legislative function, threaten harm to the body or estate of any of the members of such house;  or who shall assault, arrest or detain any witness or other person ordered to attend such house, on the witness' or other person's way going to or returning therefrom;  or who shall rescue any person arrested by order of such house.

Any person charged with such an offense shall be informed in writing of the charge made against the person and have opportunity to present evidence and be heard in the person's own defense.