The president has published just 22 letters, many to minor trading partners like Brunei, Moldova and Sri Lanka.

US buyers of copper will pay a high price if President Donald Trump pushes ahead with a 50% tariff on refined metal as opposed to products such as wiring, according to producers and analysts.

President Trump's move to impose a 50% tariff on U.S. copper imports targets a vital metal that is widely used in many products and industries. That could lead to higher prices for everything from appliances and electronics to cars and home repairs,

U.S. copper futures surged more than 13% after President Trump announced plans for a 50% tariff on imported copper. Some Roanoke business owners say the price hikes are already rolling in although tariffs have not taken effect yet.

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The exchange with the South American nation suggests the U.S. president also sees trade as a tool to influence other policies of foreign countries.

President Trump will wield 50% copper tariffs on August 1 as he promises more to come with countries such as Brazil in the crosshairs. Delta’s good news, Nvidia scores the first $4 trillion market cap milestone,

Global stocks advanced on Thursday, underpinned by optimism around artificial intelligence and the prospect of upcoming interest rate cuts, while investors kept a cautious eye on U.S. President Donald Trump's tariff actions and their impact on global trade.