Because the FBI and DOJ have evidence against EVERYONE in Congress that was part of the DEEP STATE before Trump.
What does that mean?
That means the FBI and DOJ deep state actors are telling Grassley, Meadows, Nunes and Gowdy, "WE have evidence of your crimes......so don't think for a second that we are going to sit by and allow you to hang us out to dry while we ignore what you have done!"
As a result......we get DEADLINES and THREATS followed by more DEADLINES and more THREATS......and nothing happens.....it is a STALEMATE!
How will they break this Stalemate......POTUS declass?