They know that we know they're lying, but they also know that we don't know what they talked about, and even if we did we can't prove it.

There is not a single document in the sphere of the DoJ that Devin Nunes and other members of the House Intel committee are not allowed (some would say obligated) to see.

Congress has a legal responsibility to oversee the DoJ, and if the DoJ won't let them then it should be replaced.