Thanks to trade and tariff policy, US copper futures soared as much as 17% yesterday, the biggest one-day move since the ...

President Donald Trump said Tuesday he’s imposing a new 50% tariff on all copper. However, it’s unclear when the new tariff would take effect.

The huge discrepancy in U.S. prices compared to those elsewhere is expected to have a major economic impact.

WASHINGTON — U.S. President Donald Trump says he will impose a 50 per cent tariff on copper imports — but isn't saying yet when it will take effect.

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