After a conference in Sicily over the weekend, Trump refused to join other leaders in committing to the Paris climate change accord. The pact is aimed at reducing carbon emissions.
Earlier this week, Cohn said the president's views on climate were "evolving" after meeting with other world leaders, but Cohn didn't clarify what he meant by that.
While Trump was returning to the U.S., the political news website Axios reported that he had said he plans to pull the USA out of the deal.
The rest of the world is beginning to count the United States out of the climate change battle, if a recent statement after the 2017 Group of Seven (G7) summit is any indication. President Trump made no commitment but reserved the right to make a final decision next week.
U.S. Senate Judiciary Committee member Lindsey Graham speaks during the hearing on May 8, 2017, on Capitol Hill in Washington, D.C. On Sunday, he called for Russian Federation to be punished for its involvement in the 2016 presidential election in which Donald Trump defeated Hillary Clinton.
German Chancellor Angela Merkel described Trump as the odd man out at the G7, according to Axios, and flagged climate policy as a key reason: "The whole discussion on the topic of climate was very hard, not to say very unsatisfactory". "Climate change is undeniable".
As a candidate on December 1, 2015, Trump posted a video on Instagram - while the 2015 United Nations Climate Change Conference was taking place - in which he criticized then-President Obama for "worrying about global warming". In the statement, several countries signaled support for the Paris Climate Accord, which was approved by an overwhelming part of the global community during the Obama administration.
The president's national security adviser, H.R. McMaster, chimed in to say that the president's decision about whether to remain in the agreement would ultimately be based on what's best for the United States, to which Cohn concurred.
The U.S. and French presidents had a warm conversation, the official added, noting Trump appeared to compare himself to Macron by complimenting him on both his business background and for mounting an underdog campaign to become the president. With that much environmental impact, the U.S.'s actions can certainly have repercussions for the worldwide community and the global environment.
The United States is the world's biggest economy and the second largest emitter of greenhouse gases after China.Guterres said he intends to convene a climate summit in 2019 to review implementation of the global climate deal.