Biden really should not be going either but the PR from the US is huge.
Its a hassle securing a world leader when a war is going on.
Israel has no reason to see a guy who they might be vying for money with, especially when the red team is so unclear on where it stands on almost anything with the “don’t govern, just complain stance.”
In the future Israel could be a huge problem for Iran. The US knows this. Once they figure out the exact Iranian involvement, Israel will take preventive measures Imo. The US uses Israel as well. People forget this.