Trump tariffs on Canada, Mexico and China in place on Saturday, says White House

Donald Trump had been threatening the tariffs to ensure greater co-operation from the countries on stopping illegal immigration and the smuggling of chemicals used for fentanyl (Evan Vucci/AP)

US President Donald Trump will put in place 25% tariffs on imports from Canada and Mexico and 10% tariffs on goods from China effective on Saturday, the White House said.

But it provided no word on whether there would be any exemptions to the measures that could result in swift price increases to US consumers.