Negotiators from 12 Pacific nations ( US, Japan, Brunei, Malaysia, Vietnam, Singapore, Australia, New Zealand, Canada, Mexico, Chile and Peru ) have finished a week of talks without agreement on a regional trade deal.
But the US trade representative Michael Froman said ministers were more confident than ever that a deal on the proposed Trans-Pacific Partnership was within reach.
He said it would support jobs and economic growth.
Among the sticking points were issues relating to the automobile sector and access to dairy markets.
No date has been set for the next round of talks.
Mr Froman said “significant progress” had been made in the discussions on the Hawaiian island of Maui.
He said work “will continue on resolving a limited number of remaining issues”.