This is one of the high profile public corruption cases we haven't talked a lot about. From The Arizona Republic
Two weeks after Arizona U.S. Attorney Paul Charlton was ordered to give up his post, he sent an e-mail to a top Justice Department official asking how to handle questions that his ouster was connected to his investigation of Rep. Rick Renzi, R-Ariz.
Charlton, one of eight federal prosecutors forced to resign last year, never received a written response....
When the first list of U.S. attorneys targeted for ouster was drafted, Charlton's name was not on it. But his name was on a subsequent list, drafted in September. Although the Renzi inquiry was not yet public, it is likely the Justice Department was aware of the investigation, said a former U.S. attorney who is familiar with the protocol when a sitting lawmaker is involved.