As I have repeatedly said… Just because Biden has repeated the US company line of unequivocal support for Israel, etc etc (Because even among democrats it’s political suicide to say anything else). That doesn’t mean that he hasn’t been trying the entire time to get Israel to stop the bullshit. This is more or less a point for point list of a lot of the things that have been tried. It misses quite a few of the more notable ones, but it grabs enough so that you get the idea.
Biden has pushed for supplemental aid, and he doesn’t have to. He can signal that he’ll veto any additional aid. He can certainly put pressure on Democrats to repeal already-appropriated aid, and he’d even pick up a number of Republicans on that. I also seem to remember a thing where Trump was blocking delivery of approved aid to Ukraine (with the illegal part being that it was for a quid-pro-quo), so stopping aid is certainly possible for a president.
But instead he’s pushing for more aid to Israel’s military. So once again, performative.
But just keep pretending he’s blameless!