You obviously don't know what the word means.
Giving credit to the Jewish lobby for being a fantastically successful group hardly qualifies, but sometimes when all you have is a hammer - everything looks like a nail.
That Jews, thanks to the devout work of a "Jewish lobby", monopolize American foreign policy, is an anti-Semitic claim, just as that homosexuals, thanks to the devout work of a "homosexual lobby", monopolize the Democratic Party, is a homophobic claim. If you either make or staunchly defend such claims, either out of a combination of stupidity and ignorance or actual malevolence, you run the risk of being called or labeled a bigot regardless. Even though it shouldn't need to be said, I'll point out that I'm not drawing any parallels between the persecution of Jews and the persecution of homosexuals here anyway.
No compliments are intended for any minority group accused of conspiracy to invoke their own monopoly. More so than without you are really digging the hole for yourself that little bit deeper every time you blurt out the term "Jewish lobby" without being specific about exactly what group of people you mean and exactly what they have supposedly been so "fantastically successful" at, to borrow Dawkins bombastic words. An implied "Jewish lobby", as generally representative of an entire, diverse, minority-section of society (and by logical deduction an impressive feat of collusion, conspiracy and back-handed organization) successful at monopolizing American foreign affairs policy? Ha! don't make me laugh.
Orac, author of the "Respectful Insolence" blog didn't actually go as far as he or she could have in his or her factual statement that: "The implication (or outright statement) that Jews somehow control American foreign policy (or have undue power) is a staple of anti-Semitic and Holocaust denial websites everywhere."
The idea of a malevolent, behind-the-scenes conspiracy between Jews to monopolize and control society to their own ends to the detriment of everyone else as been at the very root of anti-Semitism probably since the very first anti-Jewish pogroms; eventually elevated beyond the status of the Christ-killing accusation by the Russian historical fabrication known as the "Protocols of the Elders of Zion" and ultimately paving the way to Kristallnacht and the final solution.
Though there is an element of truth in that people of Jewish descent often cut above their own weight in society, compared to non-Jews. One of the first things that becomes apparent, to anyone engaging in even a cursory study of Jewish history, is the relative diversity of ideology amongst even small populations of Jews. I don't believe that this is due to any superiority of a Jewish "race", but merely the fact that, being in a rather specific way a "stateless" people, and not bound to the dictates of established, state-sponsored ecclesiastical authorities, there was a great deal more freedom for diversity and exploration amongst Jews in all matters intellectual. Jews excelled markedly in academia, commerce, political thought. For example when Nazi Germany enacted the Nuremberg laws and revoked the citizenship of all Jewish citizens in the mid '30s, the academic and other institutions of higher learning lost on the order of 1/3 of their brains overnight. The comparative intellectual freedom amongst Jews and the fruits it bore were both a blessing and a curse; a curse because it made the deranged accusations of antisemitism so much easier to stick.
To the simpleton the successful Jew was always an object of suspicion and contempt - not simply the product of effort and his or her comparative intellectual freedom, but a connivance between Jews to artificially elevate themselves in society above non Jews.