Albania's Prime Minister Edi Rama said in a press conference in Vienna at the end of May that his country counted 2,311 arrivals that month, up from 162 in January.
Trump revoked his administration's support for the G-7 communique after Trudeau's news conference.
The German leader said she had no idea of Donald Trump's motive for suggesting to revive the G8 format.
Merkel has said it would be illegal for Germany to take such a unilateral step and it would damage attempts to shape a comprehensive European Union migration policy.
At the summit, of which the build-up to had been dominated by Mr Trump's decision to slap tariffs on steel and aluminium imports, the world leaders had agreed a statement that read: "We acknowledge that free, fair and mutually beneficial trade and investment, while creating reciprocal benefits, are key engines for growth and job creation".
Merkel sidestepped giving a clear answer when asked if Berlin will stop viewing Washington as an "important partner", saying that she would continue efforts to achieve compromises through dialogue and "go her own way" if those discussions fail to bring any results.
Highlighting that the document is still "legally-binding" as far as Germany is concerned, Merkel said she would uphold it but her patience after Trump's about-face had worn thin.
German Chancellor Angela Merkel looks towards US President Donald Trump, who arrived late for the Gender Equality Advisory Council working breakfast on the second day of the G7 Summit on June 9, 2018 in Quebec City, Canada. But Trudeau had simply reiterated points he'd made before: that Canada planned dollar-for-dollar retaliatory tariffs in response to Trump's new tariffs on imported steel and aluminum.
In case ya missed it, the leaders of Germany, Canada, Japan, United States, France, Italy, and the United Kingdom have come together to talk global issues. Trump called him "very dishonest and weak" in a tweet after Trudeau repeated criticisms of us tariffs on imported steel and aluminum and Trump's trade policies in a news conference following the Group of Seven meeting in Quebec.
Guy Verhofstaft, the European Union parliament's representative in Brexit negotiations and former prime minister of Belgium, shared a photo of Merkel staring down President Trump during a meeting at the G7 summit. "Other states will surely follow", he said in a statement.
Yet after leaving the summit, Trump tweeted that he would instruct USA officials not to endorse the G-7 statement, after objecting to comments from summit host Trudeau.
"Canadians are polite and reasonable but we will also not be pushed around", Trudeau said.
Echoing Merkel's sentiments, French President Emmanuel Macron's office said that "international cooperation can not depend on fits of anger and a few words", according to a statement published by French public broadcaster RFI. Turning back migrants at the border, she said this week, would only add pressure to neighboring countries such as Italy and Greece.