United States Senator Chuck Grassley is a tad miffed over the FBI's use of Mark Rossetti as a confidential informant while the mob capo was running a 30-member crew in Boston, MA as reported by Mike Beaudet for WFXT:
"It's very difficult with the use of a Rossetti . . . that they wouldn't know it's going on and there wasn't some knowledge of it. And if there isn't knowledge of it there ought to be, otherwise the FBI is not doing its job," Grassley said.
Further reading that may be of interest: