Mayor Bill de Blasio said Wednesday that he does not agree with President Donald Trump pulling out of the Paris Climate Change Accord and says New York City should take matters into its own hands.
It could have sweeping implications for the deal, which relies heavily on the commitment of big polluter nations to reduce emissions of greenhouse gases.
The president tweeted Wednesday that he would make his decision soon.
McKenna said the rest of the world doesn't intend to sit and wait for Trump.
Senior adviser Steve Bannon, who wants Trump to focus on actions that will rev up his conservative political base, has long opposed the Paris accord.
The companies said it would reduce competitive imbalances for US companies, expand the market for innovative clean technology and reduce business risks posed by future negative climate impacts.
In the worst case "the USA could make it more hard to adopt the Paris rules", said Daniel Bodansky, a law professor at Arizona State University. "Yes, we're part of the union, but we're also a sovereign state that can promote the necessary policies that are required for survival", Brown said.
The world's largest private coal company, Peabody Energy, had reportedly held a similar position recently.
Once in power, Trump and Pruitt have moved to delay or roll back federal regulations limiting greenhouse gas emissions while pledging to revive long-struggling USA coal mines.
Still, he said that the carbon levels agreed to by the prior administration "would be highly crippling to the USA economic growth", and said that, if the president had to choose between limiting carbon and economic growth, "growing our economy is going to win".
"The downside.is that if they (the United States) are recalcitrant they are sitting at the table, able to obstruct or stall the process", she said.
"We believe that it would be important for the USA not to leave the Paris agreement", Mr Guterres said in response to a question following his address at New York University. "The Americans can't just leave the climate protection agreement".
"The EU and China consider the Paris Agreement as an historic achievement further accelerating the irreversible global low greenhouse gas emission and climate resilient development", the statement says.
"Peabody believes that this path can not be followed without substantially impacting the USA economy, increasing electricity costs on families and businesses, and requiring the power sector to rely on less diverse and more intermittent energy sources", the company said in a statement.
That Convention, seeking voluntary actions to rein in greenhouse gas emissions and a landmark in cooperation between rich and poor nations, has had bipartisan US support. A pullout also would be one more step by the Republican president to erase the legacy of his predecessor, Democrat Barack Obama, who helped broker the accord and praised it during a trip to Europe this month.
The world's first comprehensive climate deal, secured in the French capital in December 2015, commits countries to emissions cuts that will keep global temperature rises to "well below" 2C above pre-industrial levels.
Johan Rockstrom, director of the Stockholm Resilience Centre, said a US presence in the Paris negotiations until 2020 would be "the most negative thing. they would still be allowed to vote in the room". "He should know better", the mayor said.