Donald Trump has imposed tariffs on China, Canada and Mexico and this move will hit the US economy. The US President has said that 25 percent American tariffs on imports from Canada and Mexico will take effect from Tuesday after the 30-day pause on duties, tied to illegal border crossings and the flow of fentanyl into the United States expires. The American also reaffirmed that he will increase tariffs on all Chinese imports to 20 per cent from the previous 10 per cent levy to punish Beijing for failing to halt shipments of fentanyl to the US.