Other G-7 nations leaned heavily on Trump to stay in the deal, with German Chancellor Angela Merkel saying "we put forward very many arguments".
But according to a media report by USA website Axios, Mr Trump has told "confidants", including the head of the Environmental Protection Agency Scott Pruitt, that he plans to leave a landmark worldwide agreement on climate change.
Trump told leaders at the G7 group of nations in Italy on Saturday that he would make his decision over whether the United States continues to back the climate landmark agreement within the next week. Differences over trade and Russian Federation have also arisen in talks. Cohn stressed Friday that the president was simply being critical of the United States of America trade imbalance with Germany. Trump had said he would listen to what U.S. partners have to say at the G7 before making a decision on how to proceed.
His announcement came as a summit of G7 leaders in Sicily wrapped up in deadlock on the issue, with USA partners voicing frustration at the president's failure to commit to the deal aimed at stemming global warming. Should Trump leave the pact, the US would be the first country to exit, which would also be the second time that America has signed onto a global climate deal under a Democratic president only to walk away from the same agreement under a Republican predecessor, as President George W. Bush ultimately reneged on the Kyoto Protocol agreed to by President Bill Clinton in 1997. "That was a big topic where numerous European leaders talked about these global agreements. without the United States it's sort of missing a big gap when you take the biggest economy out".
"#G7Taormina." Trump also touted a renewed commitment by NATO's member to spend more on defense. Trump has said he would give world leaders the chance to make their case for the accord.
"The entire discussion about climate was very hard, if not to say very dissatisfying", German Chancellor Angela Merkel told reporters.
Julianne Smith, from the Center for a New American Security (CNAS), said the summit showed how team Trump appeared determined to maintain a "strategic ambiguity" whatever the cost to long-established relationships.
Billionaire Moshiri to spearhead Everton’s Italian job
Indeed, it is only by virtue of Falcinelli’s prowess in the final third that Crotone still remains in contention to survive. In Romelu Lukaku, Koeman has a player with the capability of firing Everton to far headier heights than seventh place.
On Friday, White House economic advisor Gary Cohn characterized President Trump's position on climate change as "evolving", though it was not clear exactly what that meant.
That is despite USA defence secretary James Mattis saying in an interview to air on Sunday that the president was now "wide open" on the issue.
With his first trip overseas as president behind him, when President Trump lands in Washington overnight Saturday he arrives to a slew of controversies besieging his administration.
There were scuffles in Sicily on Saturday as protesters tried break through a police cordon protecting world leaders at this year's G7. "He came here to learn, he came here to get smarter and he came here to hear people's views".
The White House did not immediately respond to requests for comment.
The final declaration pledged to "fight against protectionism" while "standing firm" against "unfair" trade practices.
The G7 consists of Canada, France, Germany, Italy, Japan, the United Kingdom and the U.S., while the European Union also has representatives present.