Nigel Farage told fellow MEPs "you're not laughing now" as he was barracked and booed at an emergency meeting of the European Parliament to discuss Brexit.
At a highly charged session in the Brussels chamber, EU Commission president Jean-Claude Juncker also questioned why the Ukip leader had attended the session following the Brexit vote.
Nigel Farage has told the European Parliament the UK voted to leave the EU because a political union was imposed on them.
"The main reason the United Kingdom voted the way it did is because you have by stealth, deception, without ever telling the truth to the British or the rest of the people's of Europe, you have imposed upon them a political union," he said.
"And when the people in 2005 in the Netherlands and France voted against that political union, rejected the constitution, you simply ignored them and brought the Lisbon Treaty in through the back door."
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.