Prominent U.S. investor Bill Ackman has once again posted on social media, urging U.S. President Donald Trump to suspend reciprocal tariffs, according to a foreign media outlet.He proposed a 30-day, 60-day, or 90-day pause to allow negotiations to proceed without triggering a sharp global economic collapse, warning that such a collapse would harm America’s most fragile businesses and citizens.Related NewsShein Raises Prices for US Goods w/ Some Products Hiking as Much as 377%In an earlier post, Ackman had stated that the U.S.’s implementation of reciprocal tariffs today (9th) was a mistake, calling for a 90-day suspension and cautioning that it risks sparking a self-inflicted "economic nuclear winter".