Federal law enforcement sources have let it be known that federal prosecutors and the FBI have completed their examination of raw data in the case. After the FBI acquires raw data – for example, the nature and number of the state secrets in the emails Clinton failed to protect or the regular, consistent, systematic nature of that failure – prosecutors and agents proceed to draw rational inferences from that data.

Then they proceed to corroborate those inferences, looking for other sources to support or even to contradict them. With one exception, all of this work has been done with neutral sources of evidence – documents, email metadata, government records and technical experts.

The exception is Bryan Pagliano, the one member of Clinton's inner circle who, with either a written promise of non-prosecution or an order of immunity from a federal judge, began to cooperate with federal prosecutors last fall.

Here is what he told the feds.