President Donald Trump mentioned Tuesday — almost in passing — that he planned to impose a 50% tariff on copper imports. It still hit like a bombshell, with potential to shake up U.S. efforts to expand,

By Daina Beth Solomon, Fabian Cambero and Ana Isabel Martinez SANTIAGO/MEXICO CITY (Reuters) -Top officials in Chile and Mexico said on Wednesday they could seek markets elsewhere to avoid tariffs from the Trump administration,

Prices for the metal hit a record high after the president suggested a higher rate than many analysts were expecting.