Prime Minister Justin Trudeau's speech responding to Trump's trade war.
Canada says it has started imposing a 25% tariff on certain vehicle imports from the US, retaliating against a similar measure from its neighbour.
The tariffs - or import taxes - will be paid by Canadians who buy some automobiles or their parts from the US.
Confirming that the new taxes would apply after midnight on Wednesday, Canadian Finance Minister Francois-Philippe Champagne said his country was responding to "unwarranted and unreasonable" tariffs.
After returning to power, US President Donald Trump has unleashed a raft of these taxes - which apply globally and specifically aim at some of his top trading partners, including Canada. He claims they will address unfairness in global trade.