The President is immune from and crimes as long as he determines it is within the scope of presidential authorty. Trump has been credibly considered a threat to American democracy. Therefore the president has the authority to remove him if he so desires. So right wingers, if Biden had actually called for the assassination of Trump, this is what you cheered for hoping that Trump would have this power to remove any liberal you guys don't like.
The court rules that former presidents have absolute immunity for core constitutional powers, and are also entitled to at least a presumption of immunity for official acts.
www.nytimes.com