A Jewish guide to Chris Christie's presidential campaign

(JTA) - As he has launched his long-shot campaign for the Republican nomination, Chris Christie has taken aim squarely at the man he once enthusiastically endorsed: Donald Trump.

But alongside portraying the former president as a danger to democracy, Christie has singled out another person for criticism who is not running for president, and who may not even work on a campaign: Jared Kushner, Trump's Jewish son-in-law and senior adviser.

The Christie-Kushner feud goes back two decades, dating back to when Christie prosecuted a case that sent Kushner's father to prison. The feud played a decisiv...