That is the same law Mr Trump used in his first term to impose 25 per cent global tariffs on steel and aluminium and one he used in February to launch a probe into potential copper tariffs.

U.S. President Donald Trump on Tuesday ordered a probe into potential new tariffs on all U.S. critical minerals imports, a ...

President Donald Trump of the United States on Tuesday ordered ... to impose 25% global tariffs on steel and aluminum and one he used in February to launch a probe into potential copper tariffs.