What are they hiding?

Barry Soper writes:

Did The Greens actually have buy-in to the promise by Jacinda Ardern to make her Government the most transparent ever?
If they did then they’re not living up to her promise. …

It’s the Cabinet door that appears to be firmly locked when it comes to the influence exerted by the Greens in Let’s Get Wellington Moving, which will be at snail’s pace for the foreseeable future when it comes to getting through the Mt Vic Tunnel on the way to the airport.
It seemed the prospect of a second tunnel was on track in the near future – until Associate Transport Minister Julie Anne Genter fired off a missive to her senior portfolio minister, Phil Twyford. Now the prospect of a second tunnel’s been put on the never-never and not surprisingly the National Party’s transport spokesman Chris Bishop wants to know why.
What did Genter say to Twyford to change his and Cabinet’s mind? There’s protocol for finding out what was said in a letter she sent to the minister.
If she sent it as a Green MP it seems it doesn’t have to be made public. If it was sent in her ministerial capacity, which she’s confirmed it was, then it does – it’s part of the public record, or at least it should be, given the context of the debate.

It is beyond belief they are still refusing to release it, considering there is no dispute she sent to as Associate Minister.

Wellingtonians are left speculating as to what influence the Greens have had in foiling the $6.4 billion transport plan.

Did the Greens threaten the Government unless they axed any meaningful action on congestion?