Last month, Canadian Prime Minister Justin Trudeau announced his government would retaliate against Trump's tariffs by imposing import taxes on $12.8 billion worth of US imports in what Canada says its strongest trade action since the World War II.
U.S. President Donald Trump angered his G7 allies last week by slapping them with hefty tariffs on steel and aluminum - a move that prompted Canada and the European Union to threaten duties of their own.
While making no direct criticism of Mr Trump, Mrs May acknowledged that the summit had been "difficult" and told MPs she had expressed her "deep disappointment" at the "unjustified" imposition of tariffs on American imports of European steel and aluminium. Addressing reporters in Singapore ahead of Trump's summit Tuesday with North Korean leader Kim Jong Un, Pompeo said he was "unconcerned" that Trump's treatment of Canada - a close ally - boded poorly for his ability to forge peace with a longtime USA adversary.
It came in response to what he claimed were "false statements" by Canadian premier Justin Trudeau.
"I'm very proud of how, not only of our government but also opposition parties and premiers, business communities and civil society have all piled in on the same side in trying to negotiate a very hard situation".
She also said the European Union would "act" against the US trade measures.
Trump was furious after Trudeau had said at the end of a contentious economic summit in Quebec that he wouldn't let Canada be pushed around in trade relations with the United States. Freeland later told reporters that "we don't think that's a useful or productive way to do business".
During an appearance on "Newsmax Now", Reagan addressed Navarro's comment in which he said, "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", referencing Trudeau.
Trump criticizing the Group of Seven nations host and stepped back from the generally positive tone that had ended the two-day meeting in Quebec. "Minimum is 17B. Tax Dairy from us at 270%", he wrote in the first of five tweets relating to the weekend's summit. "And no subsidies. I even said, 'no tariffs!'" Trump insisted.
Trump has infuriated the European Union, Canada and Mexico by imposing tariffs on steel and aluminum imports.
"It was betrayal", the top White House official said.
And German Foreign Minister Heiko Maas tweeted Sunday that Trump had partly "destroyed" Washington's trusting relationship with Europe by pulling out of the joint communique.
Kudlow later suffered a "very mild" heart attack, the White House said Monday, but was in good condition.
"He's giving a news conference about how he will not be pushed around by the United States". We'd have a deal, we'd have a great deal with NAFTA, by now, if the Canadians would spend more time at the bargaining table and less time lobbying Capitol Hill and our press and state governments here, they are just simply not playing fair.
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.