All it would take is threatening an arms embargo. Presidents have stopped Israel via a single phone call before, and they need our billions of dollars worth of bombs to continue. Don't act like we're powerless small beans here.
Worst case, they keep going but not on our dime and not with our support.
I can't ever know what's in people's hearts and minds, but I see their output clear as day.
And to be fair, the above comment was referencing the quote "Scratch a liberal and a fascist bleeds". I was calling them a fascist for telling the anti genocide folks to fuck off because his blue team lost.