President Donald Trump’s tariff onslaught this week left a lot of losers – from small, poor countries like Laos and Algeria to wealthy U.S. trading partners like Canada and Switzerland

The 50% tariff on imported copper that starts Friday excludes a critical input that companies say they can’t get enough of in the U.S.: cathodes. Here's what you need to know. What are cathodes? Cathodes are a key intermediate product in copper manufacturing.

The president stopped short of putting a 50 percent tariff on refined copper, as he had threatened earlier this year. The market reaction was swift anyway and prices tumbled.

The United States will impose a 50% tariff on copper pipes and wiring, President Donald Trump said on Wednesday, but details of the levy fell short of the sweeping restrictions expected and left out copper input materials such as ores,

U.S. copper prices plunged after President Trump unveiled 50% tariffs on copper products, but not on the raw material itself. Copper prices surged to records this month after Trump said he would impos