Biden could stop the genocide in one day.
I know you believe in magical ponies, but seriously dude. Try to at least stay mildly connected to reality.
1) Let the UNSC ceasefire through without veto
Israel (and Hamas) ignore it immediately.
So much for ending genocide in a day.
2) Declare the US is legally not allowed to sell or give weapons to Israel (which is true)
Since you think it is already true then nothing changes, right?
Or fine, the US doesn't allow US companies to sell arms to Israel.
Israel continues its attack with its many, many other weapons.
So much for ending genocide in a day.
3) Declare support for the ICJ and ICC
Israel is already a member of both, the US accomplishes nothing by doing this.
ICJ is already in process of judging Israel. That hasn't stopped Israel from doing what it is doing.
So much for ending genocide in a day.
4) Declare AIPAC foreign lobbyists
Does nothing to stop Israel killing people.
So much for ending genocide in a day.
These are all things that would weaken the relationship between the US and Israel.
Absolutely NONE of them would stop the genocide in a day.
As you yourself say, Netanyahu thinks the war is keeping him in power and out of jail
So maybe the
most effective thing the US could do would be to offer Netanyahu asylum and complete protection from international law if he steps down.
Netanyahu can't stop the genocide as he knows as soon as it ends his career is done.
But if you do all those things his government will fall and the genocide will be stopped.
How would those cause his government to fall?