Paul Combetta was a computer specialist from Platte River Networks who apparently specialized in deleting emails. He made Hillary Clinton's emails disappear even after requests from Congress to keep them. Yet, despite that seemingly guilty deed, the Department of Justice has just granted him immunity. As a result, the House Oversight Committee's request to investigate the deletions have hit a dead end.

Clinton campaign spokesman Brian Fallon insists neither Clinton nor her attorneys had any knowledge of Combetta's actions.

"As the F.B.I.'s report notes," Mr. Fallon said, "neither Hillary Clinton nor her attorneys had knowledge of the Platte River Network employee's actions. It appears he acted on his own and against guidance given by both Clinton's and Platte River's attorneys to retain all data in compliance with a congressional preservation request."

As you'll recall, this isn't the first time Obama's Justice Department has allowed a Hillary aide off the hook. In March, IT specialist Bryan Pagliano was granted immunity despite his admitting to setting up Clinton's private server.