Why is Mueller hading off key cases?

This article make many great points.

[link to www.washingtonexaminer.com (secure)]

“Something has been going on with Robert Mueller's investigation of people thought to have played significant roles in the Trump-Russia affair. The special counsel, assigned to investigate "any links and/or coordination between the Russian government and individuals associated with the campaign of President Trump," has been farming out seemingly important parts of the investigation to offices outside his own.”


"There is absolutely no chance any of the Russian officials charged will ever see the inside of an American courtroom," McCarthy wrote. "The indictment is a strictly political document by which the special counsel seeks to justify the existence of his superfluous investigation."