OTTAWA — U.S. President Donald Trump has imposed tariffs on U.S. imports today coming from Canada and Mexico.

The president’s executive order hitting Canada and Mexico with 25 per cent across-the-board tariffs, with a lower 10 per cent levy on Canadian energy, took effect at 12:01 a.m. ET.

Here’s the latest news (all times Eastern):

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6:31 a.m.

Unifor national president Lana Payne says U.S. President Donald Trump has seriously misjudged the resolve and unity of Canadians, and he has misjudged how damaging this trade war will be for American workers.

The head of the union, which represents 320,000 workers, says the tariffs will hurt working people with higher prices for everyday goods, destroy jobs on both sides of the border.

Unifor is calling on all levels of government and industry to step up and co-ordinate a response to the continued tariff threats on targeted Canadian industries.

Payne says Canada’s trade relationship has forever changed with the U.S.

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6 a.m.

A survey by KPMG finds two-thirds of Canadian business leaders polled say they can weather a trade war that lasts more than a year.

The report also says that 86 per cent support retaliatory tariffs against the United States.

Timothy Prince, the Canadian managing partner for clients and markets at KPMG in Canada, says the business community remains unwavering in its commitment to stand up for Canada.

The report is based on a survey completed last week of 602 business leaders from primarily mid-sized and large companies across Canada and industry sectors.

5 a.m.

Canadians are waking up to a new and uncertain reality after U.S. President Donald Trump’s deadline for economy-wide tariffs passed with no relent overnight, triggering a continental trade war.

The president’s executive order hitting Canada and Mexico with 25 per cent across-the-board tariffs, with a lower 10 per cent levy on Canadian energy, took effect at 12:01 a.m. ET.

“Tariffs, 25 per cent on Canada and 25 per cent on Mexico, and that’ll start,” Trump said Monday at the White House, sparking an immediate response from Wall Street. ”They’re going to have to have a tariff.”

In a statement Monday night, Prime Minister Justin Trudeau said Trump’s tariffs are “unjustified” and Canada will retaliate with counter-tariffs and other measures.

Canada’s response is to start with tariffs on $30 billion worth of goods immediately and tariffs on the remaining $125 billion worth of American products 21 days later.

“Our tariffs will remain in place until the U.S. trade action is withdrawn, and should U.S. tariffs not cease, we are in active and ongoing discussions with provinces and territories to pursue several non-tariff measures,” Trudeau said. “While we urge the U.S. administration to reconsider their tariffs, Canada remains firm in standing up for our economy, our jobs, our workers, and for a fair deal.”

Trudeau is set to hold a press conference in Ottawa Tuesday morning with Finance Minister Dominic LeBlanc, Foreign Affairs Minister Melanie Joly and Public Safety Minister David McGuinty.