"I spoke with Santos, if things continue like this we cannot go", Argentina's Macri said of the upcoming April summit following the news of his Peruvian counterpart's, Pedro Pablo Kuczynski, resignation due to "moral incapacity".
"We are anxious about Kuczynski's situation and are looking at how his situation develops in Congress, we are very anxious, and obviously if the government falls we will not travel", said Macri Tuesday, La Nacion reports. He had been facing an impeachment vote on Thursday.
Lawmakers from across Peru's political spectrum have agreed to investigate five allies of President Pedro Pablo Kuczynski who appear in videos discussing state contracts as payback for blocking the leader's impeachment.
His opponents wanted to remove him for allegedly receiving illegal payments from the Brazilian construction giant Odebrecht.
But he held onto power by a slim margin and accused the opposition of trying to stage a coup.
In an address to the nation, Mr Kuczynski said the video footage had been edited to incriminate him.
"The opposition has tried to paint me as a corrupt person and they have managed to influence a group of reasonable and honest workers around me, getting them unfairly involved in this plot to destroy the government", he said.
That's where Vice President Martin Vizcarra, who is now serving as Peru's ambassador to Canada, has been lying low as the political drama has entered into overdrive.
Instead he lost support because of the way he handled the scandal. Keiko Fujimori tweeted, using the president's initials.
Next week, Brazil's former President Luiz Ignacio Lula da Silva, a front-runner in presidential polls ahead of elections in October, could be sent to jail.
A former World Bank economist and Wall Street banker who had never run for public office, Kuczynski ran a campaign based on promises to clean up a government beset by corruption. Cabello said that with the president gone there would be no "legal power to prevent a country, a member of that multilateral organization (the Summit of Americas), from attending it".
The head of Peru's congress says lawmakers have agreed to debate President Pedro Pablo Kuczynski's offer of resignation on Thursday.