Act's leader's standing by his controversial Treaty Principles Bill, under criticism from Sir John Key.

At National's conference in the weekend, the former Prime Minister said the temperature should be turned down on race relations.

He suggested the Bill isn't workable, because the principles of Te Tiriti change over time.

David Seymour told Heather du Plessis-Allan problems need open discussion.

He says the Bill is about what the founding document really means, and will find out how to make New Zealand a place for all.

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