Donald Trump has acknowledged a conventional US transition should start for President-elect Joe Biden to get down to business.
The US president said the government organization supervising the handover must “do what should be done”, even as he pledged to continue challenging his political race rout.
The General Services Administration (GSA) said it was recognizing Mr Biden as the “clear victor”.
It came as Mr Biden’s triumph in the province of Michigan was authoritatively guaranteed, a significant hit to Mr Trump.
The GSA declaration implies the duly elected president currently approaches top security briefings, office space and government authorities as he plans to get to work on 20 January.