What do you do with an FBI agent, sworn to uphold the law, who flagrantly violates the law in a rogue investigation aimed at making a name for himself by bringing down some high-profile targets?

Why . . . you promote him, of course.

At least that is the way the Justice Department answered that question in the case of David Chaves, an FBI agent who serially and lawlessly leaked grand-jury information, wiretap evidence, and other sensitive investigative intelligence to the media in his quest to make an insider-trading case against some celebrities. And when finally called on it, the Justice Department circled the wagons: proceeding with its tainted prosecution, referring the now-retired Chaves for an internal investigation that has gone exactly nowhere after nearly two years, and using legal maneuvers to block the courts and the public from scrutinizing the scope of the misconduct.