President Obama during his acknowledgement to Sheriff Dupa of Pima county at the Wellstone II eshortation stated that Judge Rolls was visiting (implying he was not on Federal business) with the Congresswoman but his staff said he appeared on the podium to articulate about the backlog of deportation court cases, thus on federal business.
When Obama did this he jeprodized the Federal case.
Neat eh ?
Maybe Obama jeopardized the case unintentionally--you can't expect him to know all the fine points of the law. Of course he did go to Harvard Law School, but that was just to burnish his credentials as a community organizer.
If Holder doesn't have to bother with any cases other than the Congresswoman's, that will give him more time to work on how to make Sarah and Rush accessories to the murders.