The politicians are not getting the backing of some of the groups that they want. If there is an accident, they want to be able to say, "<Insert the group here> said this was safe. I voted for it based upon all of the information that I had and their ringing endorsement." Those same politicians are feigning disgust over a potential delay because the majority of their base is for NBAF. Secretly, those politicians are glad that there is a snag. They are all a bunch of pussies.
Source: A to A-
(no sarcasm, no smart assedness)