Inslee joins governors of New York, California to form US Climate Alliance

Trump concluded, as he said, that his priority as US president was to put American workers and families in "Youngstown, Ohio; Detroit, Michigan.; and Pittsburgh, Pennsylvania. ahead of Paris, France".

Moran, a Kansas Republican, said in a statement that he "opposed the Obama administration's decision to enter into the Paris climate accord without appropriate congressional input".

"As the Mayor of Pittsburgh, I can assure you that we will follow the guidelines of the Paris Agreement for our people, our economy & future", he posted in one of a series of tweets that swiftly went viral.

Under the Paris agreement, negotiated during former President Barack Obama's tenure, the United States voluntarily committed to reducing polluting emissions by 1.6 billion tons by 2025. The other two are Syria and Nicaragua.

Economist Gary Hufbauer of the Washington-based Peterson Institute told VOA he expects other countries to remain a part of the accord, and that Trump deciding to leave would "put the a bad light".

But Pittsburgh is hardly a depressed post-industrial hub in need of a saviour; it has experienced a striking rebirth in recent years. "The president wants to ground it - we're going to fly it".

Mr Brown, who championed environmental causes when he first served as governor in the 1970s, oversaw an expansion of California's greenhouse gas reduction standards since returning to the post in 2011. In New York, Cuomo announced he would use executive orders to ensure his state continues to abide by the Paris agreement.

While Trump said the United States would be willing to rejoin the accord if it could obtain more favourable terms, the three European leaders said the agreement cannot be renegotiated, "since it is a vital instrument for our planet, societies and economics".

And in a statement, Downing Street said: "President Trump called the Prime Minister this evening to discuss his decision to pull the U.S. out of the Paris Agreement".

Chicago Mayor Rahm Emanuel added, "As the Trump administration pulls back, Chicago will push forward and reduce our fair share of carbon emissions in line with the Paris accord". Major companies and industries in the United States had already signaled they would move toward a cleaner energy future as natural gas and renewables made coal a costlier option; their endorsement of the Paris agreement offered hope that technological advancements would surpass the pledges made and lead to a more moderate increase in warming.

Defending the government's decision not to sign the declaration, Chief Treasury Secretary David Gauke said on BBC Newsnight: "Different countries will take different approaches in how we choose to express our opinion". "We will double our efforts to fight climate change", he said.

The coastal Louisiana city faces a triple threat of subsidence, coastal erosion and sea level rise, Mr Landrieu explained.

"If unchecked, New Orleans, like many coastal cities, will cease to exist".

Macron was not done yet, he also replied to Donald Trump's "Make America Great Again" slogan by saying 'Make the Planet Great Again!'

  • Zachary Reyes