It will make murder legal for him, depending on how the Supreme Court rules on the presidential immunity case. Which they’re conspicuously refusing to do before the election.

If they ruled presidents had immunity it would literally make murder legal: Biden could legally murder Trump and only face impeachment. No criminal proceedings could be brought against him.

They’re obviously not ruling on it now. Cynically one could argue that they’re going to change the ruling depending on who wins. If Biden wins reelection then they’ll rule that presidents have legal limits. If he loses then they expand the power of the dictatorship.