Canadian Foreign Minister Chrystia Freeland had responded to the White House comments by saying that Canada will retaliate to United States tariffs in a measured and reciprocal way and that Canada will always be willing to talk.
Nearly as an afterthought, Trump - now in Singapore for a summit with North Korean leader Kum Jong Un - tweeted: "Great to be in Singapore, excitement in the air!"
Some say this is all about Trump looking tough for his Korean summit with Kim Jong Un, although I'm not sure roughing up your allies builds trust with your enemies.
Trump was reacting to Canadian Prime Minister Justin Trudeau, who said Saturday that Canada would retaliate for Trump's proposed new tariffs. Trump aides accused Trudeau of betrayal of Trump for his statement on retaliation.
White House economic adviser Larry Kudlow and trade adviser Peter Navarro drove the message home in an extraordinary assault on a close U.S. ally and neighbour. "He's a pathetic little man-child". And much is being made of a photograph showing Trump and Japanese prime minister Shinzo Abe with their arms crossed as German chancellor Angela Merkel and French president Emmanuel Macron lean on a table between them and Trump, seemingly trying to convince him of something.
"I just don't see anything wrong with the American president suggesting that the G7 go back and have another discussion with Russia", Kudlow said on CNN's "State of the Union".
"PM Justin Trudeau of Canada acted so meek and mild during our @G7 meetings only to give a news conference after I left saying that. he 'will not be pushed around.' Very dishonest & weak", he added.
Navarro added that while these were his own words, they reflected the "the sentiment that was on Air Force One".
Trump, after announcing the tariffs, sends message to Trudeau about NAFTA talks on May 31- "Earlier today, this message was conveyed to Prime Minister Justin Trudeau of Canada: The United State (sic) will agree to a fair deal, or there will be no deal at all". He had other things, bigger things, on his plate in Singapore. He did him a favor and he was even willing to sign that socialist communique. All Justin Trudeau had to do was take the win. Trudeau stuck our president in the back. UK Prime Minister Theresa May stood with Trudeau on the issue of trade. "So he holds a press conference - the president is barely out of there on the plane to North Korea, and he starts insulting us, he starts talking about the U.S.is insulting Canada", Kudlow said.
"In general, it was an attack on the president", he claimed.
Twitter conspiracy theorists have gone into a meltdown over them, with many replacing cries of "Fake News" with 'Fake Brows'. From promoting democracy and to fighting terrorism, "we're on the same page". But Trump's rhetoric after the conference wasn't that different from his rhetoric before it. On Saturday, Trump criticized the Canadian leader after Trudeau announced that all G-7 nations at the summit over the weekend signed onto a joint communique.
"To our allies: bipartisan majorities of Americans remain pro-free trade, pro-globalization & supportive of alliances based on 70 years of shared values", the Arizona senator tweeted. That came after months of threatening, and then imposing sanctions on America's top trading partners, like Canada.