The British and Irish Lions have won a Test series for the first time in 16 years after an impressive 41-16 victory in the third Test against Australia.
Alex Corbisiero, Jonny Sexton, George North and Jamie Roberts all scored tries for the Lions.
More top news
The letter was signed by the CBI, British Chambers of Commerce, the EEF, the Institute of Directors and the Federation of Small Businesses.
A spokesperson said Rory Stewart's remarks were in line with the British government’s stated position.
The minister's intervention will come a week after Trump decertified the landmark agreement claiming it was not in the US national interest.