This particular data set referred to in letter is the FISA that Rosenstein testified is not what people think it is.
It’s either bait & switch i.e. RR turned the tables and used the FISA to start following the people who planted Page ... or it shows RR is compromised and should have recused (or worse).
I still dunno! It’s a mystery! ;)
But ... the fact people have seen this and know what they’re asking for means that people know - and it hasn’t leaked. Either it’s people tied to Trump or more Steele stuff ... or it’s turning the tables - in which case the Cabal would know, too, via their counterparts on committees. That would suggest it’s coup stuff by RR & the Mule.
NOTE the date of that FISA was a month before the prior expired. In previous renewals, they waited until it was time. Sundance @ CTH suggests that’s right when the Strzok texts were exposed and Horowitz was coming.