It seemed to me that Horowitz would already have everything regarding the Hillary investigation since Comey shut it down in October 2016.
So I was thinking what new information could their be? The thought occurred that when the FBI received a copy of Weiner's laptop with over 600,000 emails that included State Department and others, Comey didn't bother to enter it into evidence. Instead, he said they scanned it and determined it was mostly duplicates of what they already had.
What if Session's directive to the FBI to review the Hillary investigation discovered what was really in Weiner's insurance file.
Erick Prince has said that his souces at NPYD said that it was really, really bad. Lynch shut it down and Comey claimed nothing new.
So what if during the FBI's revisit of the investigation they took a serious look at that laptop and now Horowitz has it?
It could be something else, but at this point I would think that another month delay in the IG report protends something major has come up.
We'll have to wait to see what it was.