CHEYENNE, Wyo. (AP) — 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.

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

President Trump ordered Commerce to study whether tariffs are needed to reduce the U.S. reliance upon imported copper, needed for military equipment, data centers and electric vehicles.