Canadian Foreign Prime Minister Chrystia Freeland also did not appreciate Trump's comments, saying they were not "appropriate or useful".
White House economic adviser Larry Kudlow accused Trudeau of betraying Trump with "polarizing" statements on trade policy that risked making the USA leader look weak ahead of the historic summit with Kim.
Trump also renewed attacks on Canadian Prime Minister Justin Trudeau, who had hosted the G-7 meeting in Quebec.
Trudeau himself was nowhere to be seen Monday, taking a break after hosting the tense, three-day summit, to which Trump arrived late, left early and then upended with a Twitter tirade from Air Force One. "Least of all from subordinates of the president directed at the prime minister of their greatest friend and ally", he said.
Smith further said Trump's latest attitude towards Trudeau isn't a new thing and he has "been kicking allies in the teeth his whole presidency". Can't do it in person.
Trump said Trudeau's promise not to back down from United States tariffs is "going to cost a lot of money for the people of Canada". Trudeau had engaged in "bad-faith diplomacy", Navarro maintained. Among other things, she said the government should be preparing to keep pace with corporate tax cuts and tax breaks south of the border. "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. Trudeau stuck our president in the back. "That will not stand".
Trump fired off a volley of tweets on Monday further venting anger at North Atlantic Treaty Organisation allies, the European Union and Trudeau.
Trudeau triggered Trump's fury when he said that citing U.S. national security interests as justification for slapping tariffs on Canadian steel and aluminum exports was "insulting". "They surely can not be that upset about what the prime minister said", according to a second Canadian official.
White House economic adviser Larry Kudlow also said Sunday that Trudeau "really kind of stabbed us in the back".
"Sometimes when we think about tariffs, when we think about a trade war, we lose sight of the real impact, and that's on workers", Singh told a news conference on Parliament Hill. "I don't understand the obsession with trade relations with Canada", he said on Fox's "Sunday Morning Futures", given that Canada is the biggest single buyer of American goods and services in the world.