Antisemitism is real.
Acknowledging the relationship between American Jews and Israel, and the significance of American politics for the latter isn't antisemitism. x.com/IBJIYONGI/status/1768621958499877352
There's are two reasons why Haaretz, Bloomberg, Político, and the Washington Post all used the same phrase to describe Chuck Schumer's position.
1. American Jewish politicians are a significant topic in Israeli politics.
2. More importantly, because Schumer used it too.