Companies including Apple, Facebook, Google, Microsoft, Unilever and Morgan Stanley have signed a letter imploring Mr Trump not to exit the 2015 Paris climate accord, as he promised to do during his presidential campaign.
On Wednesday, Mr Trump said on Twitter that he would be announcing his decision on the accord from the White House Rose Garden at 8pm BST on Thursday.
White House sources said on Wednesday morning that Mr Trump will formally withdraw the US from the deal, although NBC have reported that the President is yet to reach a final decision.
The letter follows Tesla CEO Elon Musk’s suggestion that he would quit his advisory role on a White House business council if Mr Trump chose to exit the deal.
It argues that “continued US participation in the agreement benefits US businesses and the US economy in many ways”.
In April, a group of 16 companies, including Shell and Walmart, also signed a letter to Mr Trump expressing their support for the US’s continued participation in the agreement.
The White House has yet to detail plans of what process it would use to withdraw from the agreement. »