"Prime Minister Trudeau is being so indignant, bringing up the relationship that the US and Canada had over the many years and all sorts of other things. but he doesn't bring up the fact that they charge up to 300 percent on dairy - hurting our Farmers, killing our Agriculture!"
Navarro, for his part, suggested that he was following orders - but made a poor choice of words in doing so.
"I've never seen language like this, the least of all from subordinates of the president directed at the prime minister of their greatest friend and ally".
Trump is in Singapore where he is meeting with North Korean leader Kim Jong-Un.
He further said that throughout the summit, the United States tried negotiating with Trudeau in "good faith", but the Canadian President undermined the United States and its allies.
"On his comments, I'm going to stay focused on defending jobs for Canadians and supporting Canadian interests", Trudeau said before walking away from reporters.
Trump says Trudeau "probably didn't know that Air Force One has about 20 televisions".
Naperville officer rescues toddler running on Route 59
Anthony Mannino stop his patrol auto on the right side of a busy highway, just behind where the young boy is running. The boy runs away from the sergeant, prompting the officer to sprint after the boy south along Route 59.
The second issue was United States' insistence on "reciprocal" trade, the source said.
Trudeau was quick with his riposte: "So I'd say NAFTA is in good shape".
"That co-operation to reduce costs, find efficiencies and open up trading within our own region will benefit not just small and medium enterprises, but the region overall", Bell said.
Mr Trudeau said he had reiterated to Mr Trump, who left the G7 meeting before it ended, that tariffs would harm industries and workers on both sides of the US-Canada border.
Trump has consistently railed against what he claims are unfair trade practices by some of America's biggest trade partners, including Canada - in particular Canada's supply management system, which levels tariffs of up to 300 per cent on imported dairy products.
"That's going to cost a lot of money for the people of Canada; he learned", Trump said wagging his finger. "And it won't even be tough".
Trudeau kept silence after the personal attacks.
If the dispute can't be resolved, the two countries can take the matter to the World Trade Organisation, she said.
According to the USTR, America counts Canadian goods that are shipped to regional trading hubs within the United States and then re-exported back to Canada or Mexico as USA exports.