"I see the television and he's giving a news conference about how he "will not be pushed around" by the United States".
"It's very unfair to our farmers, and it's very unfair to the people of our country", Trump said Tuesday in Singapore.
He added: "I actually like Justin, you know, I think he's good, I like him, but he shouldn't have done that. You can't do that".
Trudeau has not reacted to the comments.More news: Trump says he may pardon late boxing hero Muhammad Ali
The relationship between the USA and its allies was already off-balance after Mr. Trump just a week before the summit imposed 25% tariffs on steel and 10% tariffs on aluminum from the European Union and Canada.
At his closing press conference, Trudeau called US steel and aluminum tariffs "insulting" and pledged to proceed with previously announced retaliatory tariffs.
The Liberal government is looking forward to seeing the details of the agreement that emerged from Monday's historic meeting between Trump and North Korean leader Kim Jong Un, Trudeau said Tuesday as he arrived on Parliament Hill for his weekly cabinet meeting.
Ms. May also rejected President Trump's suggestion that Russian Federation should be brought back into the G7. "He did a great disservice to the whole G7", economic advisor Larry Kudlow said on CNN on Sunday.More news: Neal Boyd Dead - 'America's Got Talent' Winner Dies at 42
Trump's tough rhetoric for the leader of Canada, one of the United States' closest allies, was in sharp contrast with the words he chose to describe Kim.
Heyman said Trump's tweets and protectionist about-face could and force Canada to look for trade partners beyond the US, noting Canada's trade frameworks with Europe and Asia. "Obviously, we don't want to be held hostage to these tariffs Donald Trump has arbitrarily put in place, but there are other things that we would like to see in terms of advancing the free trade agenda".
"I want to pay a particular tribute to Prime Minister Trudeau for his leadership and skilful chairing, which enabled us after two days of negotiation between leaders to agree actions and a shared approach on some of the most pressing challenges facing the global community and our citizens", she told parliament. Perhaps they were trying to show the power they have. If they were anxious by the president's attacks on one of our closest allies, they didn't make it known publicly.
The test for GOP leaders now is to finally stand up to Trump for their states on trade after they've mostly looked past their disagreements with him on everything else. The U.S.at the end of May imposed tariffs of 25 percent on steel imports and 10 percent on aluminum imports against Canada, Mexico and the European Union.More news: Cristiano Ronaldo Reportedly 'Angry' at 'Derisory' Real Madrid Contract Offer
Growing tensions between the United States and Canada after a series of attacks from President Donald Trump and his aides have left Republicans on Capitol Hill as stupefied as much of the rest of the world.