Larry Kudlow, director of the National Economic Council, lashed out at Trudeau as "amateurish" and "sophomoric" for a news conference he gave after Trump left the G7 summit on Saturday.
The announcement and Trump's planned tariffs have also put him on a collision course with Trudeau, leader of another key U.S. ally.
Despite the apparent acrimony, Mr Macron said the G7 -which groups the United States, Canada, Great Britain, France, Italy, Germany and Japan - has succeeded in coming up with a joint declaration on trade.
Trump had appeared cordial during the two-day summit in Quebec, but he erupted with a Twitter firestorm of criticism of Trudeau once aboard Air Force One. -Canada border. He said unleashing retaliatory measures "is not something I relish doing" but that he wouldn't hesitate to do so because "I will always protect Canadian workers and Canadian interests".
"As Canadians, we are polite, we're reasonable, but also we will not be pushed around", he said.
In urging Trudeau to apologize for his comments, he also said the prime minister's statements were a "diplomatic betrayal" as Trump headed to Singapore to his high-profile summit with North Korean leader with Kim Jong-un.
"These are jointly shared principles, although the pitfalls lie in the details", German Chancellor Angela Merkel said in a press conference before the release of the communique. Canadians, he said, "will not be pushed around".
But Kudlow said he doesn't know whether there will be a deal and that Trump had no alternative but to respond the way he did to Trudeau's "very unfortunate" statements.
Trump also called for Canada to drop all trade tariffs, such as the one created to protect Canada's small dairy industry, and threatened more trade action if Canada did not acquiesce.
The fight isn't just with Trudeau and Canada but with the best allies of the U.S., Democratic Senator Dianne Feinstein of California said on CNN.
EA at E3 2018
The highly anticipated action title is set for release on February 22 , 2019 for PlayStation 4, Xbox One and PC. In addition to a release date, EA gave gameplay details and showed both a CG trailer and a gameplay one.
Putnam Draws Fire After Background Checks Report
Of those, Putnam's office conducted a further review on 365 applicants and then revoked 291 of their concealed carry permits. Putnam is running for governor and has pushed to make it easier for people to get a concealed weapons permit.
"There's a special place in hell for any foreign leader that engages in bad-faith diplomacy with President Donald J. Trump and then tries to stab him in the back on the way out the door", Navarro told Chris Wallace on "Fox News Sunday".
The two-day summit in Canada has been marred by a tit-for-tat exchanges of hostile tweets, with U.S. trading partners furious over Trump's decision to impose tariffs on steel and aluminum imports from Canada, the European Union and Mexico as part of his "America First" agenda.
Former prime minister of Canada, Stephen Harper, reacts to dispute between Trump and Trudeau at the G7 summit and discusses the North Korea summit on 'Sunday Morning Futures'.
Mr. Trump said on Saturday that he had told the G7 leaders that the US required fair access to markets and an end to unfair trade practices.
Pierre Lampron, the president of Dairy Farmers of Canada, shot back at Trump's claims about his industry.
"You go tariff-free, you go barrier-free, you go subsidy-free".
Trump's personal attack on Trudeau is unprecedented in the countries' longstanding relationship.
Justin Trudeau and President Trump participate in the working session at the G7 summit on Friday. "Americans stand with you, even if our president doesn't", he wrote. He also attacked Trudeau's character, calling the Liberal Party leader meek, weak and dishonest.
"President Trump saw that he had a united front before him", Macron said via Twitter. Dealing with Trump's whims and last-minute changes of mind has proven a procedural nightmare, political analysts said.