Reaction around the country was swift.
“It’s not their say. It’s our say,” Velina Chartier, an activist with the anti-corruption group Nou Pa Dormi that lead large protests against the government two years ago, said of the jockeying by the nation’s political leaders. “We are the ones who have to manage and find a way to live together in this country.”
Mr. Lambert, one of the 10 remaining elected officials in the country, has been among those aiming to fill the void left by Mr. Moïse’s killing. After eight of his fellow senators and several political parties declared that he should become provisional president, he announced a week ago that he was going to be sworn in by the Parliament.
Then, he promptly postponed.
While he had explained in a tweet that the decision had been to allow all senators to be present for the nomination, on Sunday he said the real reason was pressure from American diplomats.
Rather than a consensus, he said, the Core Group of international actors had imposed a “unilateral proposal.”
“They always say the solution has to be Haitian, but this is not a Haitian solution,” said Mr. Lambert, a powerful politician first elected in 1990, who grew up desperately poor in Haiti’s south, one of 11 children of an illiterate fisherman and street vendor mother.
The risk of allowing decisions to be guided by foreign powers, he said, was further unrest.
“Ninety-five to ninety-seven percent of political parties will not accept this. And if they don’t accept this unilateral proposal, it’s certain there won’t be an election,” he said. “Even if there are elections, the results will be refuted, and Haiti will continue on this spiral of instability.”