Donald Trump, copper and Tariff
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The president has published just 22 letters, many to minor trading partners like Brunei, Moldova and Sri Lanka.
The sector-specific tariffs are putting pressure on businesses and foreign nations as they try to navigate Trump's constantly evolving trade agenda.
U.S. President Donald Trump on Tuesday said he would impose a 50% tariff on imported copper and soon introduce long-threatened levies on semiconductors and pharmaceuticals, broadening his trade war that has rattled markets worldwide.