[TEXOKIE]

Is that the Grassly FISA authorization letter previously mentioned? I skimmed it, but was unable to translate the legalese.

https://www.judiciary.senate.gov/imo/media/doc/2018-05-17%20CEG%20to%20DOJ%20(Special%20Counsel%20Investigation%20&%20Regulations).pdf

[rolling_stone]

basically grassley is challenging the authority of the special counsel and demanding documentation by may 31 from rosenstein including answers to 16 comprehensive questions...bada bing..

[Cboldt]

-- Is that the Grassly FISA authorization letter previously mentioned? --

Yes, it is.

He's challenging Rosenstein on the appointment, period, as well as on the scope of authority that Mueller has exercized.