At a news conference after his meeting with Mr Kim, the President said the Canadian leader must not have realised that Mr Trump had televisions on Air Force One, allowing him to monitor Mr Trudeau's news conference at the end of the G7 summit.
Those comments came after Trudeau's closing news conference at the G7 summit in Quebec on Saturday, when the prime minister said he had pushed back against the Trump administration's tariffs on steel and aluminum.
Dias says if Trump follows through, the Trudeau government will have to escalate its retaliatory measures.
The Trump administration took umbrage at an ally publicly criticizing USA policy just before a historic meeting with Kim Jong-Un.
"I know my colleagues are hearing from numerous businesses and manufacturers across the country very similar stories, that this trade dispute is probably two weeks away from affecting Canadians in a very real way", he said.
The United States has imposed 25 per cent tariffs on steel from Canada, Mexico and the European Union, and 10 per cent tariffs on aluminum.
Chris Coons, a Democrat on the Senate Foreign Relations, told MSNBC Trump had welcomed authoritarian leaders in other countries even as he "picks fights as he just did at the G7 with our longest, oldest closest allies: democracies, developed Western countries like Canada".
Trudeau reiterated that his nation's retaliatory tariffs will go into effect July 1.
"Canada is not a country that we have trade issues with", he said.
"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. "And Justin. And I said, "Oh that's nice, Justin's giving a" - And then he talked about how they won't be bullied".
The EU has "a $151 billion surplus" which it should use to fund "military", said Trump Monday, referencing what Trump believes is the US' outsized financial contribution to North Atlantic Treaty Organisation. According to a Canada release, they make nearly 100 Billion Dollars in Trade with USA (guess they were bragging and got caught!). Yesterday Ford said he stands "shoulder to shoulder" with the Liberal prime minister because Ontario jobs are at stake. "The wounds will heal, but the question [is] how does the relationship get impacted?"