It’s no surprise that the likes of M.J. Rosenberg, whose hatred of Israel and venom for its defenders is practically unmatched, is screeching that the Emergency Committee for Israel has accused Joe Sestak of being “un-American.” He’s not paying attention — Sestak is being accused of being anti-Israel. A specialist in dual-loyalty charges like Rosenberg should know the difference. And I can’t begin to figure out his bizarre assertion that those who care about Iran going nuclear shouldn’t bother with “local Pennsylvania politics.” It is the U.S. Senate we’re talking about, right? Mr. Rosenberg, not only your animus but also your panic is showing.

But it’s worth trudging through that hooey to get to this comment from a Rosenberg reader:

As a Democrat I hope Sestak wins, but I find it interesting that far from defending his position on the letter about the Gaza blockade, he will now bend over backward to make sure people in Pennsylvania know how much he disagrees with you, Mr. Rosenberg, on what needs to be done with Israel. For the next six years Joe Sestak will say everything and do everything that AIPAC wants and to that I say: AMEN!

Well, this is the rub, isn’t it? Sestak signed the Gaza 54 letter, but now that he’s in a Senate race, he has signed on with a majority of his House colleagues in a letter supporting Israel on the flotilla and implicitly criticizing the administration. Did he have a change of heart, or does he merely lack the nerve to be as forthright about his views with the Pennsylvania electorate as he was with his J Street backers?

And what of the anti-Israel left? Aren’t they just a bit peeved that first Obama and now Sestak has dropped the Israel-bashing? You would think that they, too, would have the power of their convictions. Why do they prefer to fuzz up the differences between Sestak and his opponent on Israel? Wonder if it has anything to do with the political toxicity of their anti-Israel stance. But Rosenberg’s reader has one thing wrong: Sestak isn’t likely to get elected by conning the voters that he is AIPAC’s best friend. J Street — and ECI — will make that very hard.