It is the latest in a string of sectoral tariffs imposed by the US president.
Archived version: https://archive.is/newest/https://www.straitstimes.com/world/trump-announces-50-tariff-on-copper-effective-aug-1
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The US imports 800.000 tons of copper.
Copper costs about 8 bucks per kilo.
That’s 6.4 billion dollars, so an extra 3.1 billion for Donald’s buddies. Or about 9 bucks per American.