She conceded in an interview on German public television Sunday that the meeting's outcome "wasn't a great thing".
Trump's call for Russian Federation to be readmitted to the G7 came amid increasing tensions between the USA and key allies, as well as the president's increasingly warmer stance on Russian Federation.
U.S. President Donald Trump said Saturday that he will attend the upcoming meeting with the top leader of the Democratic People's Republic of Korea (DPRK) Kim Jong Un with "positive spirit".
Trump said he doesn't blame the current leaders, but he had a sharp warning for them if they don't work with him to correct what he sees as an unfair situation.
Mr. Macron, feuding with Mr. Trump over US steel and aluminum tariffs on the European Union, tweeted that he and the other six leaders were prepared to turn their backs on Mr. Trump at the summit.
German Chancellor Angela Merkel said it's "a bit depressing" that President Donald Trump reneged on the Group of Seven's joint statement, though it isn't the end of the trans-Atlantic partnership. That was a part of Trudeau's mistake.
In response, Canada, Mexico and the European Union said they were putting in place their own retaliatory measures.
Trump has said he'll use the summit to argue that the other six nations are taking advantage of the USA on trade. Trump imposed tariffs of 25 percent on steel imports and 10 percent on imported aluminum from the European Union on June 1, a move he said was meant to protect USA national security.
Trump administration officials on Sunday accused Canadian Prime Minister Justin Trudeau of stabbing President Trump in the back, blaming him for the president's refusal to endorse a joint statement with other world leaders.
Trump left the meeting between the world's leading industrialized countries with a warning to US allies, saying that if they don't remove trade barriers with the USA then they will face consequences. He described all seven leaders coming together to sign the joint declaration despite having "some strong, firm conversations on trade, and specifically on American tariffs".
He insisted, like Trump himself has done many times, that Canada has enormous tariffs itself - especially on certain dairy and food products.
Edward Markey (D-Mass.) said on CBS' "Face The Nation" that "right now, the President is actually driving our allies away from us as we need them even more, while welcoming in the Russians".