Trump signs order to impose tariffs

U-S President Donald Trump has signed an order to impose stiff tariffs on imports from Canada, as well as Mexico and China.  Trump is declaring an economic emergency to put duties of 10% on all imports from China and 25% on imports from Mexico and Canada — except for a 10% rate on Canadian oil.  The White House said Trump’s order also includes a mechanism to escalate the rates if the countries retaliate against the U.S., as they have threatened. Trump says the tariffs are to force the countries to do more to stop the flow of fentanyl into the U.S.