Unfortunately, that isn't likely to happen. Netanyahu has, to date, handled Trump deftly and Rubio's current presence in Israel seems to be aimed at offering support to the ground offensive, not opposition. I honestly have no idea what kind of backlash it would take to shake U.S. support for this genocide.
It is worth noting that Andrew Cuomo, in a desperate last-minute gamble to boost support in the NYC mayoral race, has come out against Israel. Considering that much of the attacks on Mamdani have focused on his support for Palestine (construing him as antisemitic), it's notable that other candidates also seem to think that being anti-Israel is actually the vote winner for moderates right now.
I understand that that's the current shorthand, but it seems inaccurate and unnecessarily polarizing to me.
For better or worse, Netanyahu represents the Israeli governement, which represents Israel. Similar with Trump and the USA, or Putin and Russia. Sorry for the people who don't agree with them, but that's an internal power struggle, and as an outsider it is normal to abstract that away. For all of us: Your country is doing what it does.
As a Belgian, I spit on my idiotic, nasty governements. Insert tiny violin, whatever Belgium does on the international forum, I'll still be tarred with it. Similarly, we talk about Germany's role in world war 2, even if only about 10% of them were associated with the NSDAP.
Every power struggle is always represented overly simplistic. Sorry for both the jews and Israëli's who don't agree with it, you're probably good people. This time I am lucky to sit at a very comfortable sideline, criticising your country. But the point stands: Israel is correctly described as officially committing a genocide, and hence it can't be described as the good side.