The pork industry believes Canada's inclusion in the Trans-Pacific Partnership will hurt pork producers here.
The nine strong partnership has grown to 11 with the inclusion of Mexico and Canada.
Canada's involvement has been met with distaste by the pork industry in New Zealand, Australia and the United States because pork production is subsidised in Canada, meaning it'll be cheaper to bring into New Zealand.
New Zealand Pork CEO Owen Symmans says local producers will suffer.
"Trade needs to be on a fair basis and if there is an agreement that products can come into New Zealand highly subsidised competing against their own products then that is not fair."
Owen Symmans says another problem is some of the welfare standards in Canada aren't at the same high level as New Zealand.