"I expect iPhones that will be sold in the United States of America will be manufactured and built in the U.S."

Apple’s efforts to diversify its production away from China have been undermined by President Trump’s renewed threat to impose a 25% tariff on iPhones not made in the US.

It would take several years and cost billions of dollars to build plants in the United States to make iPhones here. If that happens, prices could skyrocket.

SAN FRANCISCO (AP) — Unhappy that Apple intends to source nearly all of its U.S. iPhones from India, President Donald Trump on Friday threatened a 25% tariff on the popular device unless the tech giant moves production to the United States. But Apple has seen little incentive in the past to manufacture domestically.

Donald Trump wants Apple to make iPhones in the US. That won't happen, says journalist Patrick McGee, who just wrote a book on Apple's ties to China.