Trump first slapped a 10% blanket tariff on all imports into the U.S., including from uninhabited islands, such as the Heard and McDonald islands, and on places with which the U.S. runs a surplus, such as the U.K.

Economists say the crude formula the White House used to calculate what it’s calling “reciprocal tariffs” is too simplistic to achieve its goal of wiping out US trade deficits — and, for that matter,

Dive into the formula used by the U.S. to calculate its reciprocal tariff rates, and see what economists are saying.