They have been warned..

Seeing people in congress being frustrated in trying to get answers from the bureaucrats and getting nothing but snide and poorly hidden disrespect would be funny if it weren't leading to the desolution of out country.

The congress, under the rule of both parties have over time granted more and more of its authority and responsibility to the administrations and the agencies ruled by the administration.

Now they don't seem to know how to take the authority back.  The petty little civil servants are neither civil or servants.