US President Donald Trump has said he will only join the Trans Pacific Partnership (TPP) if the deal is substantially better than the one offered to President Barack Obama.
The TPP is the free trade pact with primarily Asia-Pacific nations that Mr. Trump backed out of last year.
Just hours earlier, Mr. Trump had unexpectedly said the US would consider rejoining the pact.
The US president has previously criticised the deal as a potential disaster.
His trade strategy is under fire as a conflict escalates with China.