Right from the beginning of this interview, Trey Gowdy tries his hard sell of accusations against Hillary Clinton, promising new information.
Usually, an accusation works when everyone agrees there's some wrong doing and not when you have to spend a lot of time trying to explain to people what the wrong doing is.
Everyone is sick of this Benghazi bullshit and they want it to go away, not because of a cover-up but because it's now become a major time-waster as the years go by. It's even to the point where even with some new accusations, this time against Gowdy, no one wants to be bothered by it.
Check the mainstream media, there's nothing on that story but maybe it would be a great idea to make it a bigger deal than it already is, kind of like his obsession with Blumenthal but this time from a real fire. (Samuel-Warde)
The article refers to this one by NewsWeek that refers to some other statements made by Gowdy suggesting that unless those Republicans are on the Benghazi committee, they should 'shut up' because they don't know what they're talking about.
Given the information provided from the Samuel-Warde article; if I were a good reader of deception, I would say that he wants control of what Hillary Clinton should or shouldn't be accused of and making changes to documents would be a great way to do that.