They seem to believe this is a big deal.
I don't see it.
It effectively shuts down Nunes work and Schiff will be delighted, and turns loose only Mueller, the Inspector General, and US Att. Huber from Utah, and the US Att. Little Rock U1 & Clinton Foundation investigations working.
Sounds like Congressional committees are at the mercy of Justice Department.
Congress may reject this advisement and issue contempt?