Ten years ago it was 'Kiwi Not Iwi'. Today, it's 'Hobson's Pledge', and takes its inspiration from Governor Hobson's quote upon signing the Treaty Of Waitangi - 'He iwi tahi tatou' We are one people. The same man, former National Party leader Don Brash, is behind both campaigns. Ward Kamo caught up with Mr. Brash and his co-spokesperson Casey Costello from Ngāpuhi.