Pressure is mounting on the Government to disclose the details of talks for a Pacific-wide trade deal.
Politicians from seven of the 12 countries involved in the Trans Pacific Partnership have signed an open letter demanding that the text of the proposed agreement be released, before it's signed.
MPs from New Zealand, Australia, Canada, Japan, Malaysia, Mexico and Peru argue the talks need detailed scrutiny and public debate.
More than 150 other politicians in Chile and the United States have already called for greater transparency.
In New Zealand, the Greens, New Zealand First, and the Maori and Mana parties have all endorsed the statement.
The Government says the public will get a chance to have its say once a deal is concluded.