New Delhi, April 3 -- US President Donald Trump's tariff policy could cause an economic loss of up to $30 trillion, or $300,000 per family of four, former US Treasury Secretary Lawrence Summers said.

Summers, who is also the Harvard president, has sharply criticized Donald Trump's newly announced tariffs, calling them "the most expensive and masochistic" policies the US has pursued in decades.

In a series of posts on X, Summers estimated that Trump's 10% baseline tariff on all imports and higher reciprocal tariffs for specific nations could result in an economic loss of up to $30 trillion, or $300,000 per family of four.

Summers initially pegged the loss at $20 trillion, citing a 2-3% decline in US stock markets following Trump's speec...