For now, most of Apple's most important products are exempt from tariffs after Trump gave phones and computers a tariff waiver — even from China — in April.

U.S. President Donald Trump's tariff decisions since he took office on January 20 have shocked financial markets and sent a wave of uncertainty through the global economy. Here is a timeline of the major developments: February 1 - Trump imposes 25% tariffs on Mexican and most Canadian imports and 10% on goods from China,