The US would literally cut off France, etc. before it let France cut off Israel. France the so-called beacon of... whatever... has been arresting Jewish anti-Zionists for protesting Israel. Imagine arresting Jews for demonstrating against the state that many like to call "the Jewish state." It sounds absurd on the face, but it's not about ethnic and religious stuff, it's about empire and maintaining a slipping one. Jews protesting Israel looks incredibly bad for Israel and Zionists (they can't just be dismissed as Nazis after all), so the optics of arresting "unruly" protesters is worth it to make sure that people know it doesn't matter who you are, you do not question the west on Israel.

This is all a long-ass of saying "why would they do that?" It's just not necessary. There is no danger of Israel losing support anytime soon. The west might demand they stop sending the IDF to help the settler-terrorists in the West Bank, but as far as backing their military campaigns of bombing and genociding in ways that are "less personal" the US very very clearly has no interest in seriously entertaining the idea. And the EU has effectively made the discussion of doing so illegal (don't worry, the US will probably pass laws soon enough. A few too many anti-Zionist protesters have been chafing some high-up asses like Jon Greenblat.)