Weigel

Daniel Halper and Greg Sargent spotlight the latest ad from the Committee for Israel, which is going to town on Democratic members of Congress who signed a January letter criticizing Israel over the siege of Gaza. The Committee's strategy: Zero tolerance, even (especially) against members who are with them on the whole. That's begun to raise eyebrows with like-minded activists, who are willing to look past this one letter.

"While it's true that signing the J Street letter was a cause for concern," said one official with a pro-Israel group,"and remains so, it's also a fact that Congressman Himes has aconsistently pro-Israel voting record and strong friends in themainstream pro-Israel community."

There was no such pushback when the Committee went after Rep. Joe Sestak (D-Penn.), now running for the Senate. But the aftermath of that attack -- Sestak trying to get the ad pulled, and failing -- ensures much more of this.