Tweeted Trump in a series of tweets starting last night: "Please tell Prime Minister Trudeau and President Macron that they are charging the USA massive tariffs and create non-monetary barriers".
"It would be with regret but it would be with absolute certainty and firmness that we move forward with retaliatory measures on July 1 applying equivalent tariffs to the ones that the Americans have unjustly applies to us", Trudeau said at a press conference closing the summit.
"Canadians are polite and reasonable but we will not be pushed around", Trudeau told reporters on Saturday.
President Donald Trump has arrived in Singapore for talks with the North Korean leader, but he remains focused on the G-7 conference of allies he just left behind in Quebec and the question of free trade.
Mexico hit back with fiscal penalties on US exports like pork, steel, cheese and whiskey. "Kim must not see American weakness", he said.
US President Donald Trump proposed the complete elimination of all barriers to worldwide trade at a Group of Seven summit, a move that turns the tables on allies who accuse the US of wielding protectionist policies.
"I think it would be an asset to have Russian Federation back in", Trump told reporters shortly before flying out of the ongoing Group of Seven summit.
French President Emmanuel Macron had labelled the summit a success before Trump's Twitter posts, saying there was relief within the G7 that an escalation of the trade dispute had been avoided. Trump has said that Russian Federation should have been readmitted to the negotiations.
"He held a press conference and he said the U.S.is insulting".
The calamitous summit ended in disarray after Trump broadsided his allies by disavowing a joint statement the U.S. had agreed to.
On June 1, the U.S. imposed a 25 per cent tariff for steel and 10 per cent for aluminium on imports from the European Union (EU), Canada, and Mexico. "We make our commitments and keep them".
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".
Asked about Navarro's comments, Canadian Foreign Affairs Minister Chrystia Freeland said, according to reporter Daniel Dale, "Canada does not conduct its diplomacy through ad hominem attacks".