More than 70 progressive US and Brazilian lawmakers have condemned the collaboration between the Bolsonaro family and Trumpists in the US aimed at overturning elections in both countries, and called for those involved to be held to account.

“As lawmakers in Brazil and the United States, we stand united against the efforts by authoritarian, anti-democratic far right actors to overturn legitimate election results and overthrow our democracies,” said the joint statement, led by Democratic congresswoman Ilhan Omar.

The statement, released on Wednesday evening, cited both Sunday’s attack by supporters of former president Jair Bolsonaro on government institutions in Brasília, and the very similar 6 January 2021 insurrection in Washington by Donald Trump supporters.

“It is no secret that ultra-right agitators in Brazil and the United States are coordinating efforts,” the legislators, including 36 US Democrats and 35 Brazilian progressives, said.

They pointed out that after the 30 October Brazilian elections, won by President Luiz Inácio Lula da Silva, the defeated president’s son and Brazilian congressman, Eduardo Bolsonaro, flew to Florida and met Trump and his former aides, Jason Miller and Steve Bannon, who “encouraged Bolsonaro to contest the election results in Brazil”.

“Soon after the meetings, Bolsonaro’s party sought to invalidate thousands of votes,” the statement said. “All involved must be held accountable.”

The lawmakers also drew attention to the fact that Bannon has been convicted for failing to comply with a subpoena to appear before congressional hearings or provide relevant documents on his role in the January 6 insurrection two years ago.

Jair Bolsonaro flew to Florida on 30 December, the day before his presidency came to an end. The Biden administration has not directly commented on his immigration status, but it pointed out that an A-1 visa, reserved for foreign leaders, would expire 30 days after the holder ceased to hold high office, implying that if Bolsonaro entered the country on such a visa, he would have to leave by the end of this month. The administration has also said it would treat any Brazilian government request for extradition “seriously”.

Bolsonaro’s former justice minister Anderson Torres, who was the official responsible for security in Brasília, flew to Orlando, Florida, where the former Brazilian president is staying, on the weekend of the insurrection, instead of making any preparations to defend government buildings from the protests. Torres has been fired, his house has been searched and a warrant has been issued for his arrest. He said he was ready to return to Brazil to present himself to the authorities.

An inquiry is under way in Brazil to determine the extent and sophistication of the planning behind Sunday’s riots, and whether they were a part of a coordinated coup attempt.

“Democracies rely on the peaceful transfer of power,” the lawmakers’ statement said. “Just as far-right extremists are coordinating their efforts to undermine democracy, we must stand united in our efforts to protect it.”