Other countries - including the United States - would be welcome to join a new cross-Pacific trade deal that includes Australia but they'll have to abide by the ground rules already laid out.
Foreign Minister Julie Bishop says the 11 member countries of the Trans-Pacific Partnership - agreed to last week and due to be signed in March - would negotiate with anyone else who wanted to join.
"It is an agreement structured in a way that would enable other countries to join," she told Sky News on Monday.
"Obviously we've set the ground rules, we've set the guidelines, the standard, the benchmark for the trade deal and it would be on a case-by-case basis to negotiate with any potential incoming member."
There had already been interest from South Korea, Thailand and the UK, she said.
The US was originally part of negotiations for the pact but President Donald Trump made pulling out one of his first acts upon taking office a year ago.
Now he's indicated he may consider re-joining if the US could get a better deal.
American beef producers and wheat farmers are furious Mr Trump's abandonment of the deal will give Australia and other nations major advantages in key markets including Japan.
Deputy Prime Minister Barnaby Joyce said on Sunday the deal wasn't yet finalised and if minor changes were needed to bring the US back on board that should be done.
But Prime Minister Malcolm Turnbull has said he wouldn't expect the US to re-join any time soon.
