Biden is not the President of the United States.
Not yet. First, he has to be inaugurated on January 22.
Before that can happen, the electoral college vote has to be approved by Congress on January 6th.
Vice President Mike Pence is the final authority on whether Congress will accept the electoral college votes from any state, as the chief of the Senate.
The Trump campaign is working hard to get a case before the US Supreme Court to stop the certification of the electoral college.
If that does not work, Trump can invoke his Executive Order of 2018 against foreign interference, if the Dominion software used to count the votes in the election can be shown to have interfered in the election, which witness affidavits say that it has.
But, even some the big bank establishment financed Republican members of Congress would rather fix the voting software problems next time, not this time.
Trump can also invoke his executive powers against insurrection.
The Trump lawyer Sidney Powell has asked for the removal of the Director of the CIA for not keeping the elections safe from the vote-shaving and vote-flipping Dominion vote counting software.
The US Army just told the CIA Director that they will not be supplying the CIA with special forces troops, anymore.
The US Navy ships in service and the domestic US military air traffic have increased dramatically, recently.
The US military is split from top to bottom over whether or not to support the US President against insurrection, ever since the Mueller Investigation.