In the air by then, Mr. Trump tweeted: "Based on Justin's false statements at his news conference, and the fact that Canada is charging massive Tariffs to our U.S. farmers, workers and companies, I have instructed our U.S. Reps not to endorse the Communique as we look at Tariffs on automobiles flooding the U.S. Market!"
The motion calls on the House to recognize the importance of Canada's "long-standing, mutually beneficial trading relationship" with the US, "strongly oppose" the "illegitimate tariffs" imposed on steel and aluminum, stand "in solidarity" with the Trudeau government's decision to impose retaliatory tariffs and remain united in support of the supply management system of regulating Canada's dairy and poultry industry.
Merkel, fresh from the G-7 meeting in Canada, said those at the meeting were "firmly convinced that sustainable world economic development can only be achieved in cooperation and through win-win situations".
Germany and France on Sunday sharply criticised U.S. President Donald Trump's decision to abruptly withdraw his support for a Group of Seven communique, accusing him of destroying trust and acting inconsistently.
The Americans' criticism of Trudeau left a former Canadian prime minister, Stephen Harper, stumped.
"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". "Canada has stood with the United States in every modern war and crisis".
"The biggest and darkest cloud that we see is the deterioration that is prompted by the attempt to challenge the way in which trade is being conducted, in which relationships have been handled, and the way in which multilateral organizations have been operating", Lagarde said without singling out any countries by name.
Trade adviser Peter Navarro told "Fox News Sunday" that "there is a special place in hell for any leader that engages in bad faith diplomacy" with Trump. "Minimum is 17B. Tax Dairy from us at 270%", he wrote in the first of five tweets relating to the weekend's summit.
Trump swiftly responded to Trudeau by upending the communiqué in a series of tweets Saturday evening.
"I think the pushback by Congress is going to come up incredibly short", Chris Barron, a pro-Trump Republican strategist, said of Republican efforts to rein in Trump.
Trump has infuriated the European Union, Canada and Mexico by imposing tariffs on steel and aluminum imports.
Kudlow says Trump won't let a Canadian prime minister push him around on the eve of his summit with North Korean leader Kim Jong Un.
"We're talking to all countries", Trump said, denouncing what he said were huge existing tariffs on USA exports around the world.