US President Donald Trump will impose tariffs on Saturday of 25% on Mexico, 25% on Canada and 10% on China, says the White House.
White House press secretary Karoline Leavitt said the duties were in response to "the illegal fentanyl that they have sourced and allowed to distribute into our country, which has killed 10s of millions of Americans".
It is not yet clear whether the import taxes would include any exemptions on products such as oil.
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