Well, you also need to elect a Democratic Congress. Not that that will stop the Supreme Court from striking down anything Congress tries to pass. Especially since the constitution means shit to them.
Democrats love this situation because it allows them to make nice sounding promises that they never have to be held accountable for. If Biden can't follow through, then this is called deception and lies.
Considering that he's already supporting the murder of thousands of Palestinians including children, not to mention his support for a capitalist system that leans on exploitation and death in the global south, I feel like we're already at a point where the President can order murder. It's just that a lot of us USAmericans are extremely racist and don't see these groups as fellow humans.
They never care, and neither do most US citizens as long as it's the "right" people being harmed. The fact that there's more outrage over a US citizen being harmed vs. a non-citizen is a perfect example of how many of us are willing to subscribe to what amounts to a fascist ideology.
Just look how many US citizens openly support border fascism. It's appalling. And our president and his party fan those flames to win elections. So does the other party. We merely vote on which flavor of fascism we prefer.