Politico speculates that FBI Director James Comey may have reopened the FBI’s Clinton email investigation on October 28, 2016 at least in part as a response to FBI agents who have been critical of how the investigation was handled. “Comey is also facing dissent from his traditionally conservative rank-and-file agents over the decision in July  not to recommend charges in the Clinton email case. It’s unclear whether that played any role in his decision to essentially announce last week’s development.”
An unnamed “former FBI top official who has worked on similar investigations” says, “The stuff about a rebellion going on inside the [FBI] is absolutely true, but that’s not going to influence his decision. He loves his troops, but it’s not a fair judgment that that’s why he did it.” (Politico, 10/31/2016)
Former Justice Department spokesperson Emily Pierce says that Comey has “come under a lot of criticism from his own people for how he’s handled this. He’s trying to gain back some of their respect. … His ability to do what he does largely depends on the respect within his own ranks. He often does things because he’s trying to prove his bona fides to his rank and file. I think that’s part of it.” (Politico, 10/28/2016)
Between October 6 and 17, 2016, the New York Post, Fox News, and the Daily Caller reported on FBI agents, usually unnamed, who are upset with Comey and the FBI’s Clinton email investigation.