There are two methods of amending the terms of reference of a sitting tribunal which are set out in the Tribunal of Inquiry (Evidence) (Amendment) (No. 2) Act 1998. One provides for the tribunal to request such an amendment. If this happens, the Minister must amend the instrument establishing the tribunal provided an appropriate resolution is passed by both Houses of the Oireachtas. In effect, if the tribunal takes the initiative and is supported by the Houses of the Oireachtas, the Minister has a passive role and must amend the instrument accordingly.