Trump signed an executive order to implement tariffs on Mexico, Canada, and China.He has been threatening the tariffs on the three countries and others for months.Canada and Mexico have vowed to impose retaliatory tariffs against the US.

President Donald Trump will move forward with aggressive new tariffs on Canada, Mexico and China on Saturday, the White House said, affirming he will stick to his February 1 deadline for the new duties that could have widespread effects on the economy.

Canada is poised to hit back by slapping tariffs on US products, with PM Justin Trudeau to make an announcement later on Saturday.