President Donald Trump is taking a step toward granting the U.S. mining industry’s biggest wishes by singling out one metal as a focus of his domestic minerals policy: copper. From talk of acquiring Greenland and its vast mineral wealth to prodding Ukraine for minerals in exchange for help fending off Russia's invasion,

An executive order mandates a review of the threats posed by over-reliance on foreign copper, and recommendations for increasing domestic supply.

The world’s top commodity traders are rushing to ship copper to the US from as far afield as Asia as Donald Trump’s threat of import tariffs on the metal creates a huge opportunity for profit.