Excerpt from http://conservativereport.org/benghazi-valerie-jarrett-cic/
" The second, and most troubling aspect of the refusal to issue Cross Border Authority is, who issued the refusal. Rather than the President, the Commander In Chief, making critical decisions, granting or denying the authority to initiate offensive-actions in support of our valiant fighting men, the decision not to take action was made by a person, to whom the people did not elect, nor did the Congress have confirmation power over.
The military-order, not to initiate action, saving our men in Benghazi, was issued by the President's Advisor, Valerie Jarrett. "
My comment: Needless to say that this denial would have been ineffective had it not carried the authority of the POTUS and that makes Obama directly responsible. Now there is sufficient matter to initiate the impeachment procedures.