It is one thing to point out that there are a lot of Jews in Congress. It is entirely another thing to state that somehow this means "disproportionate power for a small minority." This suggestion, that they somehow act together (on behalf of "the Jews?") is what is offensive. Do they represent "the Jews" rather than the people in their constituencies who elected them? Did they trick the voters? Perhaps the next step for you Joe is to oppose individual Jews running for Congress on the grounds that there are too many Jews in Congress already for such a small minority. And I suppose that isn't anti-semitism either, right?
Brazilian head of UN peacekeeping force in Haiti dies of heart attack (Reuters)
from the article: ADL survey: 15% of Americans 'unquestionably anti-Semitic'