The architect of the Treaty Principles Bill is still hopeful the Prime Minister could support it.

David Seymour confirms Cabinet discussed his Bill today - and agreed its broad outline before it goes to Parliament's drafters.

He says it'll change to acknowledge the rights of hapu and iwi at the time of the Treaty.

Chris Luxon says he won't support it past first reading, but Seymour's optimistic that could change.

"You see the exact wording, you see other people's reactions, you see it's actually a force for good - and maybe you take a different view."

Luxon said today that ACT and National don't agree on this.

"We found a compromise where both parties didn't get what they wanted, but we have to honour our coalition commitments - and that's what we're doing here."

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