Trump on Tuesday said he would impose 50 per cent tariffs on copper imports, an announcement that reverberated across the market for the world’s most important industrial metal over the past two days. The US president also floated the idea of a 200 per cent tariff on pharmaceuticals.

Futures contracts hit a record price after the president announced plans for a 50 percent tariff on the metal, driving up costs for businesses.

On July 2. Trump announced a deal with Vietnam. The Vietnamese agreed to let U.S. products into the country duty free while accepting a 20% tax on their exports to the United States, Trump said, though details of the agreement have not been released.