JAMES TARANTO: Obama and Acorn: Is there a case for a special prosecutor? “Obama worked for Acorn and Acorn worked for Obama. That doesn’t mean the president is implicated in any wrongdoing, but it suggests at least that the worse things get for Acorn, the more embarrassing it is for him. If the Justice Department fails to prosecute, it invariably would raise suspicions of political favoritism.”

UPDATE: Minn.’s Pawlenty orders review of state ACORN ties.