"This is a lot of work that we've had underway in terms of addressing climate change and changing, improving the way we offer both local government services, but also how we make the city a more sustainable place", Ervin said.
"We're now seeing governors and mayors and businesses and civic leaders really beginning to move regardless of what the White House says", he said on CNN.
The Paris pact's members set their emission reduction goals independently, so despite the loss of the USA, the world's No. 2 emitter, the immediate impact may not be great.
That line was that significant sections of corporate America, as well as several U.S. states and cities, were committed to Paris, notwithstanding his rejection.
After the USA withdrawal from the Paris deal sparked pledges of money and solidarity, Figueres said via Twitter on Friday, "Thank you Trump".
"Prevention is the best medicine - and the overwhelming majority of Americans believe we should be taking action on climate change".
Musk had faced criticism for joining Trump's panels on business and manufacturing, though he said at the time that "engaging on critical issues will on balance serve the greater good".
Following Pruitt at the podium was White House Press Secretary Sean Spicer, who also seemed to sidestep the question of the president's views on climate change.
'As a matter of principle.'
Trump cast his decision to exit the Paris agreement as an "America First" policy focused on improving the economy in the Rust Belt, specifically mentioning Pittsburgh, Penn., and Youngstown, Ohio.
At Disney's shareholder meeting in March, Iger defended his decision to be involved with the council, saying he wanted to be "in the room where it happens". But no major executives were interviewed Thursday on the three cable news networks, even as several, including the heads of Apple, Goldman Sachs and General Electric, voiced their opposition on Twitter.
David Taylor, president of the Pennsylvania Manufacturer's Association, said the USA was suffering under the Paris Climate Accord because of the regulations it imposed.
The economic argument has been that a global climate regime would create wealth and jobs in America; the moral argument has been that America is one of the world's biggest polluters per capita; and the political argument has been that a withdrawal would amount to an American surrender of global leadership which could go to China.