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, develop and deploy artificial intelligence.

By Ana Isabel Martinez and Daina Beth Solomon MEXICO CITY/SANTIAGO (Reuters) -President Claudia Sheinbaum said on Wednesday Mexico could redirect the copper it typically sends to the U.S. to avoid tariffs from the Trump administration,