Trudeau has not directly addressed Navarro's comments, but Canada's foreign minister, Chrystia Freeland, said the remarks were not "particularly appropriate or useful".
Rounds said he believed there would have to have been a significant "violation of trust" between G7 leaders for Trump to have responded in such a hostile manner.
Prime Minister Justin Trudeau is cheering Donald Trump's bid to broker a deal to rid the Korean Peninsula of nuclear weapons, but he's keeping mum on the USA president's persistent trash talk against Canada.
"Canadians, we're polite, we're reasonable, but we also will not be pushed around", he said. According to a Canada release, they make nearly 100 Billion Dollars in Trade with US (guess they were bragging and got caught!).
Trump said he watched Trudeau's news conference on Air Force One on his way to Singapore and was upset because he thought he and Trudeau had had a positive meeting at the G7 summit.
Trump told a lengthy news conference in Singapore that Trudeau's assertion that Canada "will not be pushed around" will end up costing Canadians "a lot of money".
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Trump said Canada would be subject to steel and aluminum tariffs, citing national security concerns in his justification for the penalties. The compromise on that issue resulted in language that said "free, fair, and mutually beneficial trade and investment, while creating reciprocal benefits, are key engines for growth and job creation".
Peter Navarro, Trump's top trade adviser, said, "There's a special place in hell for any foreign leader that engages in bad-faith diplomacy with President Donald J. Trump". On Saturday, he called the Canadian prime minister "very dishonest and weak".
While the agreement of MPs who are normally opposed on most fronts was remarkable, the anger spread to pundits, officials, celebrities and ordinary citizens as Canadians vowed consumer boycotts of American goods and brainstormed insults of Trump on social media.
Trudeau said he had reiterated to Trump, who left the G-7 meeting before it ended, that tariffs would harm industries and workers on both sides of the U.S. Trudeau pulled a "sophomoric political stunt for domestic consumption" that amounted to "a betrayal", said Kudlow, who appeared on CNN's "State of the Union" and CBS' "Face the Nation". "Our Tariffs are in response to his of 270% on dairy!", Trump wrote in a second tweet.
"We hope it doesn't come to that, but if the USA tariffs remain in effect, we will impose our tariffs on July 1", he said. The Canadian market place, Lampron added, "is too small to make a dent in US overproduction".