If the FBI was investigating Carlos's "sexting" an under age girl it would only involve that correspondence over his device and could not legally use any additional information such as emails with other parties not relevant to the investigation unless......
Unless Carlos offered up previously unknown information relevant to the Clinton email investigation that was contained on his device and implicated Huma as being a part of those email exchanges.
Keep in mind that Huma has filed for divorce, Carlos is likely to be convicted of texting a minor and he is now pulling out all the stops to save his stink-weasel ass...........
He probably has one of the thirteen missing cell phone Hillady lost. Lost right into Huma’s hands who took them home for her families personal use
Huma had classified info that wasn’t previously disclosed to the FBI.
Whatever she had must have been REALLY serious, or the FBI wouldn’t reopen the investigation this close to the election.
My thinking is that Huma sent stuff to the Muslim Brotherhood that was classified, making it pure espionage. This would lead to her indictment and Shrillary’s demise.
Seems like a perfect storm to me!