A war of words between National and Act - over whether there should be a referendum on co-governance.
Act wants to scrap measures that share decision-making with M\u0101ori - and is making the referendum a bottom-line in any coalition negotiations after next year's election.
National leader Christopher Luxon told Kate Hawkesby the party opposes Three Waters but there doesn't need to be a referendum.
But Act leader David Seymour told Mike Hosking a referendum - and change in law - is necessary.
\u201cThe Treaty is bringing us apart because of the way the courts have interpreted it over the last 40 years. When the courts get something wrong, it\u2019s ultimately the job of Parliament to reflect the will of the people.\u201d
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