Mexico's interest in the Trans Pacific Partnership is being seen as a good step forward.
New Zealand, Brunei, Chile and Singapore are already part of the free trade agreement.
NZUS Council executive director Stephen Jacobi says it will help New Zealand get the same criteria for its exports to Mexico as other partners like the United States and Canada.
"So it's about levelling up the playing field in the Mexican market, but more important, it's about finding a way to build this broader free trade area of the Asia-Pacific."
Mr Jacobi says the fact Mexico wants to join is more evidence the TPP can grow into a region-wide trade agreement, linking up all 21 APEC economies.
Photo: NZ Herald