According to an official at [an worldwide meeting on Saturday in Montreal], White House senior adviser Everett Eissenstat unveiled the US plan, as Ottawa, Beijing and Brussels accelerate their joint effort to minimize the fallout from a potential USA withdrawal from the Paris agreement.
Almost 200 countries agreed in Paris in December 2015 to curb carbon dioxide emissions with the aim of limiting the rise in average global temperatures to 1.5 degrees Celsius by 2050, compared to preindustrial levels.
White House aides said the administration would withdraw from the Paris accord using the process laid out in the agreement.
However, after a meeting compiled of 30 world leaders from China as well as USA allies from the European Union and Canada, he may scrap that idea completely. It has also said it would consider participating in a new, renegotiated deal.
The Paris Agreement is not legally binding, and there is no enforcement mechanism.
Canadian environment minister Catherine McKenna said the participation of a USA delegation in Montreal was a positive sign.
Saturday's gathering was organized by Canada, China and the European Union to open dialogue between major industrialized nations and developing countries and "enhance global momentum" for implementing the Paris agreement, said Miguel Arias Canete, European Commission commissioner for climate action and energy.
"Not what we need", he said. The president removed the country from the climate agreement earlier this year under the guise that the deal was not in the best interest of American business.
McKenna added that climate-change initiatives could create $30 trillion in economic activity.