Donald Trump has threatened to impose tariffs on pharmaceutical products and semiconductors as soon as 1 August, the latest deadline for the introduction of his “reciprocal” levies on individual countries. He also threatened a 50% tariff on imported copper in an effort to increase US production of the metal. Any tariffs on semiconductors are predicted to affect chipmakers and the companies such as Apple and Samsung whose smartphones and computers require chips. Trump said on Tuesday he had struck a trade pact with Indonesia to reduce the tariff rate levied on the country’s goods, after negotiations. Until now, only China and Canada have vowed to impose retaliatory tariffs on US goods entering their countries.