The sector-specific tariffs are putting pressure on businesses and foreign nations as they try to navigate Trump's constantly evolving trade agenda.

It was another day of reacting to Donald Trump’s latest remarks. The president sowed chaos in metals markets by indicating the US would implement a higher-than-expected 50% tariff on copper imports, spurring a record spike in New York futures and a drop in the global benchmark.

U.S. copper prices vaulted to an all-time high Tuesday after President Trump said Washington will slap imports of the metal with a 50% tax. Futures contracts for the metal--key for electrical wiring,