Kudlow, who was in Canada with President Trump for the G-7 meeting, told CNN on Sunday that the US had come to an agreement with the other highly-industrialized nations in the group on a joint communique until Trudeau's "sophomoric play".
Trump complained that he had been blindsided by Trudeau's criticism of his tariff threats at a summit-ending news conference.
Donald Trump's top economic adviser is accusing Prime Minister Justin Trudeau of betraying the United States administration hours after the president himself launched insults at the prime minister, calling him "very dishonest and weak" and all via Twitter.
Abe has repeatedly urged Trump to raise the abduction issue in his upcoming summit with Kim, arranging talks in Washington en route to the annual G7 gathering to press the point home to the USA leader.
Mr Trump went on to say that the United States gets "unfairly clobbered" on trade despite "protecting Europe at great financial loss".
No 10 sources revealed that although the prime minister did not have a bilateral meeting with Trump while in Quebec, the pair had spoken "in the margins" of the summit about the president's trip to Britain in July.
Spokesman Cameron Ahmad said on Saturday night that Mr Trudeau "said nothing he hasn't said before - both in public and in private conversations" with Mr Trump.
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.
REMINDER: This is Canada we're talking about.
Britain says hopes US will honour G7 commitments on trade
Downing Street said the prime minister "fully intended" to honour the agreement signed by the G7 leaders, which Trump disowned after leaving the gathering, launching a personal attack on the Canadian prime minister as he did so.
Trump also called Trudeau "dishonest and weak", an insult Navarro repeated in his appearance Sunday. "Our Tariffs are in response to his 270% on dairy!"
In the run-up to the G7 summit, Trump continued to rile up his fellow world leaders with accusations of unfair trade practices, provoking angry responses from both Trudeau and French President Emmanuel Macron, who even suggested that the G7 could fare as the G6, without the USA if need be.
"We commit to modernize the WTO to make it more fair as soon as possible".
French President Emmanuel Macron's office issued a statement that warned "international co-operation can not be dictated by fits of anger and throwaway remarks". He also said the G7 countries had "again" failed to provide any evidence that Russian Federation was behind the poisoning of a former double agent and his daughter in Britain in March. Great meetings and relationships with the six Country Leaders especially since they know I can not allow them to apply large Tariffs and strong barriers to. United States of America. "Without question, we need to remain in talks with the USA".
Merkel shared a photo on Saturday and captioned it: "Day two of the G7 summit in Canada: a spontaneous meeting between two working sessions".
Trump then departed. Trudeau appeared at a news conference and initially struck a celebratory tone, saying, "I'm happy to announce we've released a joint communique by all seven countries".
There is no obvious precedent for such a coordinated and acerbic series of attacks by White House advisers on a stalwart USA ally.
Trudeau, in Quebec City for bilateral meetings with non-G7 leaders after the summit, did not comment as he arrived.
- Dustin Johnson holes out from fairway on 18th hole
- White House Pays People To Tape Documents Trump Rips Apart
- Prince Harry and Meghan Markle to visit Australia, Fiji
- Facebook confirms user data shared with "whitelisted" companies
- Trump G7 tweets 'sobering and depressing': Merkel
- Jaguar Land Rover moves Discovery production to Slovakia
- Carbery gets the nod at 10 to face Australia
- Indian billionaire jeweller Nirav Modi flees to UK
- Robbie Williams 'happy and excited' to perform at World Cup opening ceremony
- Police officers hurt at 'free Tommy Robinson' protest