The U.S. "stated that they will not renegotiate the Paris Accord, but they try to review the terms on which they could be engaged under this agreement", Miguel Arias Canete said.
However, in response to the Journal report a White House official tells NBC News that there has been "no change" to the US' position on the Paris climate agreement, which President Trump had committed to pulling out of in June.
In June, Donald Trump announced that the United States would withdraw from the agreement, an expected move on his part. His decision fulfilled a campaign promise, but was met with widespread criticism both at home and overseas.
Whether or not Trump administration stays in the climate accord, the United States is expected to significantly reduce its ambition to curb greenhouse-gas emissions - in line with Trump's goal of clinching "fairer terms" in the deal, the Journal reported. Despite the denial, the Journal reports that a White House senior adviser, Everett Eissenstat, presented the U.S.'s reengagement plan to the ministers at the Montreal meeting.
Abandoning the accord was one of President Donald Trump's principal campaign pledges.
Canada's environment minister Catherine McKenna said during the Montreal summit that the Paris climate agreement was crucial to advancing the climate action agenda.
President Trump previously had said he would be open to "renegotiations" or crafting a new deal completely. "The United States can do whatever it wants either way".
"It's clear that we need to be taking a leadership role in climate change", said McKenna.
The timing might also be significant, considering that this comes on the heels of Trump's reported deal on DACA, it seems likely remaining in the global climate agreement will only add to the discontent among the far right and fuel their suspicion that Trump has chose to sell them out.