SINGAPORE, April 7 (Reuters) - Billionaire fund manager

Bill Ackman, who endorsed Donald Trump's run for President, said

the U.S. leader was losing the confidence of business leaders

and should pause his trade war.

"The president has an opportunity to call a 90-day time

out," Ackman said in a post on X, to resolve trade issues via

negotiation.

"If, on the other hand ... we launch economic nuclear war on

every country in the world, business investment will grind to a

halt, consumers will close their wallets and pocket books, and

we will severely damage our reputation with the rest of the

world that will take years and potentially decades to

rehabilitate."