J Street does not accept the “public harmony” rule any more than Obama does. In a conversation a month before the White House session, Ben-Ami explained to me: “We’re trying to redefine what it means to be pro-Israel. You don’t have to be noncritical. You don’t have to adopt the party line. It’s not, ‘Israel, right or wrong.’ ”

There appears to be an appetite for J Street’s approach. Over the last year, J Street’s budget has doubled, to $3 million; its lobbying staff is doubling as well, to six. That still makes it tiny compared with the American Israel Public Affairs Committee, or Aipac.

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