Trump’s Tariff Exemption Causes Copper Prices to Plummet, Disrupting a Key Trade.

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<img src="https://images.mktw.net/im-67348774" /><br>President Donald Trump’s decision this week to impose tariffs starting Aug. 1 on imports of certain copper products, while exempting refined copper, led to a significant drop in prices for the industrial metal on Thursday — and has likely disrupted a commonly used trading strategy.