As he often does, the President started to change gears after hearing complaints from important constituents - in this case, Republican lawmakers who said farmers and other businesses in their states would suffer from his trade approach because they send many of their products overseas.
"We welcome the United States coming back to the table but I don't see any wholesale appetite for any material re-negotiation of the TPP-11", Australia Trade Minister Steven Ciobo said Friday.
"I'm sure there are lots of particulars that they'd want to negotiate, but the president multiple times reaffirmed in general to all of us and looked right at Larry Kudlow and said, 'Larry, go get it done,"' said Sen.
New Zealand remains wary of President Donald Trump's apparent U-turn on a Pacific trade deal, after Trump said the U.S.is considering rejoining an 11-nation trade pact it earlier withdrew from. He has previously said he might reconsider the deal.
Trump has talked about rejoining the deal before, but only if the USA gets substantially better terms - which would take even more diplomatic wrangling to secure.
US Commerce Secretary Wilbur Ross later said the administration needs to see concrete actions from China to reach a deal. She says mixed signals from the administration could cause problems.
Republicans in Congress have also been skeptical of Trump's tendencies on trade, and 25 Republican senators sent a letter to Trump urging him to re-engage with the pact "so that the American people can prosper from the tremendous opportunities that these trading partners bring".
The S&P 500 Index closed up 0.8% and the Dow Jones Industrial Average added nearly 300 points, or 1.2%, as investors assessed the changing trade dynamics.
The deal, negotiated by the Obama administration, was largely intended as a tool to prod China into making economic changes that the U.S. and others have long wanted. Asian stocks climbed as equities in Japan and Australia advanced.
Nebraska Republican Sen, Ben Sasse, who was part of a group of elected officials who met with the president to talk trade on Thursday, said economic adviser Larry Kudlow will lead the TPP effort.
Trump withdrew the USA from the accord during his first week in office.
The news drew a rebuke from opponents of the multilateral trade pact.
Trump once called the TPP a "death blow for American manufacturing", and it's unlikely the newly-signed agreement will be more to his liking.
"It's hard to bring part of the pact and renegotiate it", he said, calling it a "well-balanced pact" that carefully addressed the needs of the current 11 member nations.
The 11 remaining nations represent 13% of global output and include Japan and Canada.
They last month finalized a revised version of the trade pact, renaming it the Comprehensive and Progressive Agreement for Trans-Pacific Partnership.