Republican U.S. Senator Tom Cotton, however, said North Korea's leader could also face harsh words.
But before the group could sign off on a joint statement of agreement on trade talks, Trump's advisers reportedly insisted that the US would not agree to two key points in the statement related to the environment.
"The important thing for the Americans to understand is that our economies and industries are highly integrated" and that tariffs would be very bad for both sides, said the official, speaking on condition of anonymity.
The Canadian dollar fell as much as 0.6 per cent against the greenback in early Asian trading on Monday as dealers responded to the G7 meeting and its aftermath. Trump imposed steep tariffs on steel and aluminum last month to rebalance trade, he said. But the president broadsided his allies after leaving the meeting by disavowing a joint statement the USA had agreed to, criticizing Trudeau and vowing tariffs on automobiles.
Prime Minister Justin Trudeau's speech at the G7 summit, in which he rebuked President Trump and vowed to protect Canadian interests, has drawn comparisons to an iconic movie moment near and dear to the hearts of many a Hugh Grant fan.
In addition to rejecting the insults aimed at Mr. Trudeau, the measure passed Monday said that lawmakers "strongly oppose the illegitimate tariffs imposed by the USA government against Canadian steel and aluminum workers" and "stand in solidarity with the Government of Canada in its decision to impose retaliatory tariffs".
Trump and his deputies took issue with Trudeau for telling a news conference at the end of the G7 conference that Canada would not be pushed around on tariffs - a point he had made several times before.
Freeland told reporters Sunday that Canada's position negotiating NAFTA is unchanged. "All Mr. Trudeau was doing was, in a rather gentle way, articulating the position his government - which would be the position of any Canadian government in these circumstances - so I don't view it as lethal", Mulroney said.
Former prime minister Brian Mulroney predicts Donald Trump's unprecedented diatribe against Justin Trudeau is a passing storm.
It now appears clear that the White House attempted to use Canada's interest in a successful G-7 summit to extract trade concessions.
Photos taken just 48 hours apart hint at President Donald Trump's feelings during meetings with global leaders.
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