"He did a great disservice to the whole (G-7)", White House Economic Advisor Larry Kudlow told CNN.
Trudeau also said Canada would move forward with retaliatory measures on July 1 in response to tariffs on steel and aluminium imports into the United States from Canada, Mexico and European Union (EU) countries announced by Trump on May 31.
Canada's Prime Minister Justin Trudeau walks off the stage after speaking at a press conference at the G7 leaders summit in La Malbaie, Que., on Saturday, June 9, 2018. Trudeau, who threatened retaliatory tariffs, also said Canada would not be "pushed around". He also attacked Trudeau's character, calling the Liberal Party leader meek, weak and dishonest.
Trump announced after Trudeau's press conference that the US would not sign onto the G-7 communique. That was Justin Trudeau's late father, who served several terms as Canada's prime minister, starting in the late 1960s.
"The New York Times notes that in a press conference Saturday afternoon, ".Mr. Trudeau said the seven nations had reached broad agreements on a range of economic and foreign policy goals.
"He was polarizing", Kudlow said during a Sunday morning appearance on CNN's "State of the Union".
Mr Trump had earlier denied that the summit had been contentious, contradicting what one G7 official described as a bitter harangue between the US President and his counterparts over tariffs.
The Trump administrationconfirmed on May 31 it would apply additional tariffs on steel and aluminium imports from Canada, Mexico and European Union countries, ending a two-month exemption period.
After one White House adviser said there was "a special place in hell" for foreign leaders like Canadian prime minister Justin Trudeau, and another said Trudeau "stabbed us in the back", Canadian leaders offered a measured - even polite - response.
Europe's answer must be to stick even closer together, defend its interests and strengthen alliances with countries such as Japan and Canada, Mr Maas said.
"I have made it clear to [President Trump] that it is not something we relish doing, but it is something that we absolutely will do", Trudeau said. But, Trump's defenders today say that he is simply standing up for America. "He's not going to permit any show of weakness on the trip to negotiations with North Korea".
Tapper picked up on the implication and said this was about North Korea.
Mr Trudeau's office responded by saying he had "said nothing he hasn't said before - both in public, and in private conversations with the president" and vowed to abide by the G7 final communique.