Trudeau had announced that the G7 members - Canada, France, Germany, Italy, Japan, the United Kingdom and the US - had agreed upon a joint communiqué, or formal statement, after a hard week on trade issues.
Trump's team kept up the barrage of criticism on USA media Sunday.
The director of the national economic council under the Trump administration, Larry Kudlow, said during a CNN interview that Justin Trudeau stabbed the U.S.in the with his comments during a press conference held after U.S. President Donald Trump left the summit.
"He did a great disservice to the whole G7".
Trump's trade adviser Peter Navarro also lashed out on Sunday at Trudeau's statements, saying they represent "bad faith".
Mr. Trump wrote (below).
"Kim must not see American weakness", he said.
Prime Minister Justin Trudeau, in a statement: "We are focused on everything we accomplished at the G7 summit".
Earlier in the day, German Foreign Minister Heiko Maas said that Donald Trump's decision to revoke his endorsement of the Group of Seven communique via a tweet has undercut trust of USA partners and made it even more vital for Europe to stand united.
French President Emmanuel Macron said "international co-operation can not be dictated by fits of anger and throwaway remarks".
Freeland, speaking at a press conference on Sunday, said that Canada does not believe that ad hominem attacks are a particularly appropriate or useful way to conduct relations with other countries.
Eagles jerseys sold out minutes after the official release
The suited and booted side were drawn in Group D alongside the Balkan nation, Iceland and old World Cup foes Argentina. Emmanuel Sunmonu, 18, spent nearly £200 on the Nigerian training top and full tracksuit after over an hour of queuing.
"I understand the president was upset", Mr. Feinstein told CNN. Global cooperation can not depend on fits of anger or little words.
Reneging on the commitments agreed in the communique showed "incoherence and inconsistency", it said in a statement.
"He really kind of stabbed us in the back", Mr Kudlow told USA media. Trudeau stuck our president in the back. On Saturday, en route to Singapore, President Trump tweeted that the United States will not endorse the communique.
"In a matter of seconds, you can destroy trust with 280 Twitter characters", German Foreign Minister Heiko Maas said when asked about Trump's decision.
Finnish Prime Minister Juha Sipila said Sunday that the rift between G7 members at the summit reflects the unpredictability in global political arena, and he hoped the aftermath of the summit would be cleared up quickly.
"The historic and important agreement we all reached" at the summit "will help make our economies stronger and people more prosperous, protect our democracies, safeguard our environment, and protect women and girls' rights around the world".
In view of threatened United States tariffs on vehicle imports, which would particularly affect Germany, Grenell said that he was a "big auto fan" and knew how important the industry was.
"The United States loses political influence in the rest of the world, and they also lose position as a centerpiece in efforts to find global joint mechanisms and set the agenda", said Solberg, who had been invited to attend the summit. "They know it", he insisted in his departing news conference.
"I don't blame them, I blame our leaders", he said.
U.S. President Donald Trump took more swipes at Canada and its prime minister over trade issues as he settled in for a summit with North Korea in Singapore, contending that "Fair Trade is now to be called Fool Trade if it is not Reciprocal".
McCain tweeted that the "bipartisan majorities of Americans" are in favor of free trade and globalization, and "supportive of alliances based on 70 years of shared values".