Actually, if you read the AP article, he’s not Jewish. He was raised Catholic and there’s no evidence that he ever converted to Judaism in a way recognized by any branch of Judaism. He just started pretending to be Jewish. Who knows why? Part of some profit-making scam? Figured it would make his claim to be a lawyer more believable? Part of his effort to assume a new identity so as to evade the various law enforcement agencies around the world that have been looking for him? Maybe all of the above.