Trump didn’t have any evidence but holds the view that what ever he says is true even when it isn’t.

He told the Daily Caller in an interview conducted on Tuesday that Facebook and Google had already interfered in the 6 November election.

Trump’s accusation added to recent charges he and Republican lawmakers have made of political bias against conservatives by social media companies and search engines.

Republican lawmakers may raise issues of political bias in Wednesday’s hearing in the Senate Intelligence Committee, where Facebook Chief Operating Officer Sheryl Sandberg and Twitter Chief Executive Jack Dorsey will testify.

They are expected to defend their companies against what lawmakers see as a failure to combat Russian efforts to game the elections in favour of the Republicans.

US intelligence agencies have concluded that Russia interfered in the 2016 campaign with the aim of tilting the election in Trump’s favour, a finding that Moscow has denied.