In the article, I believe the Congressional staffer was reponding to the reports question of "Why didn't this Able member speak up earlier". The Staffer was implying that if the Able member did, it may affect his career negatively. The staffer was not threatening the person, he was actually answering for him.
I understand how the Gorelick Wall would have prevented domestic LE agencies from being notified, but what about the chain of command? Who did these officers report to, and did they pass the information to them?
This information either got to the President, or else someone below Her in the chain of command decided not to pass it on.