I received an email over the weekend from a woman in northern New Jersey who says she was “shocked” to see Senator Cory Booker’s name on the list of Democratic senators who are backing AIPAC over the president on the issue of Iran sanctions. “I don’t get it. He has been a friend of Muslims during his entire career. Why did he change?” The answer is simple: he didn’t. His support for the local Muslim community has nothing to do with his position on matters AIPAC cares about: the Israeli-Palestinian issue and Iran. As far as the lobby is concerned, Booker can march 24-7 in front of the FBI building to protest profiling of Muslims, so long as does not deviate an iota from Netanyahu’s line on Israel, Palestine or Iran. In fact, being good on Muslim civil rights serves as a good cover for being terrible on Middle East matters.

Booker is a more complex case than, say, Chuck Schumer, Lindsey Graham, or Bob Menendez. They are obstructionists on Iran and Israel entirely for the campaign funds. For Booker, that is a large part of it. Remember how, back in the 2012 presidential campaign, he publicly broke with President Obama on whether or not Mitt Romney’s work at Bain Capital — buying up and then dismantling companies — was a legitimate campaign issue? Obama thought it was because it showed Romney not as a job creator but the opposite. But, just as the Bain issue was getting traction in the polls, Booker went on Meet The Press and called the Obama’s use of it “nauseating” and “ridiculous,” damaging Obama but delighting Booker’s own Wall Street donors.

So there can be no doubt that Booker goes where the money is. But there is more to it than that in this case.

Back in July, Peter Beinart devoted an entire piece in Daily Beast to Cory Booker’s unique relationship with ultra-right wing Judaism (specifically the Chabad Lubavitch movement). Read it here.