China had said that Trump's tariffs would "inevitably affect and damage future bilateral cooperation on drug control".

NEW YORK -- The U.S. will pause tariffs on Mexico and Canada for a month while the countries negotiate on border security, but President Donald Trump warned that tariffs on China will go up if his administration cannot reach a deal with Beijing to rebalance trade and fight fentanyl trafficking.

On Saturday, Trump imposed a 10 per cent tariff on all Chinese imports, describing the move as an “opening salvo.” Despite earlier campaign promises to introduce tariffs as high as 60 per cent, the administration opted for a lower initial rate but warned of further increases if China fails to meet US demands.