Press Release – New Zealand National Party Prime Minister Jacinda Ardern needs to clarify just how she measured the success of her Governments Kahukura Mongrel Mob rehab pilot, Leader of the Opposition Judith Collins says. Labour have been quick to claim that the pilot programme … Prime Minister Jacinda Ardern needs to clarify just how she measured the success of her Government’s Kahukura Mongrel Mob rehab pilot, Leader of the Opposition Judith Collins says. “Labour have been quick to claim that the pilot programme of the Mongrel Mob meth rehab programme had a ‘100 per cent success rate’. Michael Wood, for example, repeated this claim numerous times on today’s AM Show.