His administration finally authorised Mr Biden’s transition to the presidency.

Emily Murphy, the administrator of the General Services Administration, began the process last week.

She said she “was never directly or indirectly pressured by any executive branch official including those who work at the White House”, but Mr Trump tweeted he had recommended Ms Murphy do so.

Although the move paves the way for a Biden White House, the President continued to insist his case against the election would “prevail” in the same tweet.