Section 6 of the principal Act is hereby amended by adding the following subsection:
“(7) Notwithstanding anything in this Act or any other Act or rule of law, on and from the commencement of this subsection the Tribunal shall not have jurisdiction to inquire or further inquire into, or to make any finding or recommendation in respect of,—
“(a) Commercial fishing or commercial fisheries (within the meaning of the Fisheries Act 1983); or
“(b) The Deed of Settlement between the Crown and Maori dated the 23rd day of September 1992; or
“(c) Any enactment, to the extent that it relates to such commercial fishing or commercial fisheries.”