United States President Donald Trump's proposed 50% tariff on copper imports would affect Mexican exports worth around US $1 billion per year.

U.S. President Donald Trump's announcement of a proposed 50% tariff on copper imports has raised concerns in Chile and Peru, ...

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The announcement sent copper futures surging, with US Comex contracts jumping over 12 per cent to a record high, reflecting market surprise at both the timing and the steepness of the proposed rate.