President Donald Trump went on the offensive against Apple on Friday, demanding that the company begin making iPhones in the United States or pay tariffs of at least 25 per cent on iPhones made abroad.

The ultimatum is the latest in a decade-long push to get the technology giant to move its supply chain. When he first ran for president in 2016, Trump promised voters that he would “get Apple to start building their damn computers and things in this country instead of other countries”.