Leaders of the G7 nations struggled to close a widening chasm on Friday triggered by US President Donald Trump's thrashing of global trade rules and differences in the Western alliance over climate change and the Iran nuclear deal.
Kudlow says the White House has taken issue with Trudeau's comments during the news conference that Canada must stand up for itself and that recently imposed US tariffs on steel and aluminum are "insulting".
Canadian Prime Minister Justin Trudeau closed the summit by issuing a strong rebuke to Trump's trade threats, calling them "kind of insulting" and saying they would be met with retaliatory measures from July.
NERVOUS MARKETS: Trump, who aides said has scant interest in multilateralism, is set to have bilateral meetings with French President Emmanuel Macron and Canada's Trudeau at the summit.
"International cooperation can not be dictated by fits of anger and throwaway remarks", President Emmanuel Macron's office said in a statement to AFP.
A few hours earlier, Trudeau had told reporters that all seven leaders had come together to sign a joint declaration.
Trump, who last week slapped tariffs on steel and aluminum imports from Canada, the European Union and Mexico, left the Group of Seven summit early but not before threatening to cut off trade with countries that treated the United States unfairly.
With respect to the North Korea summit, Trump said that it would be a "one time shot" for Kim Jong-un but he is hopeful that the meeting would work out.
President Trump concluded his G7 meetings, declaring the US has been taken advantage of for decades on trade, and assured that all of the involved countries are much more committed to fair trade with America.
A source within the French presidency said Trump's proposal did not seem "coherent", and that it would be discussed in Quebec.
Before departing the summit, Trump doubled-down on his assertions that the United States has been subjected to unfair trade duties for many years.
Italy's new Prime Minister Giuseppe Conte also backed Trump's call.
Trump doubled down on his views Saturday during a press conference at the major summit.
Trump has asked countries to end tariffs and trade barriers in his push for "fair and reciprocal" trade.
Trump made the remarks before he departed Charlevoix, Canada, after meeting with world leaders.
"They should let Russian Federation come back in, because we should have Russian Federation at the negotiating table", Trump said.
Trump has announced tariffs of up to $150 billion on Chinese goods over USA complaints of Beijing's trade practices and its alleged theft of US technology.