Jeremy Ben-Ami: economic pressure doesn't work?

Jeffrey Goldberg, previewing an interview he's soon to publish with J Street founder Jeremy Ben-Ami, puts up this response of Ben-Ami's to Peter Beinart's proposed Jewish boycott of West Bank settler goods:

"...I don't think that it makes any sense to put negative pressure on people whose behavior you hope to change. I think that the way that Israelis will feel comfortable making the compromises and the sacrifices -- and Israel as a whole, not just the settlers -- is when they really feel that not only American Jews, but the United States, is going to be there for them. I think if you begin to do things that say, "We're not really with you, we're against you, we're putting pressure on you," I think that causes people to pull more into a shell and pull back."

Hmm. I guess Ben-Ami doesn't think much of the sanctions imposed on Iran?  In December 2009, when Rep. Howard Berman (D-Calif.) sponsored a bill in Dec. 2009 granting the Obama administration additional powers to place gasoline sanctions on that adversary, here's what he said: