1) Intelligence failure and refusal to act upon threat of airplane-based terrorist actions results in the death of 2,600 people on 9/11/01.
GOP Reaction -- "George W. Bush, he kept us safe". http://www.dailykos.com/story/2015/09/17/1422216/-Jeb-Bush-My-brother-kept-us-safe
2) Intelligence failure and failure to see warning signs causes 4 deaths at Benghazi.
GOP Reaction -- "Criminal act by Clinton. Disqualifies her from office; their blood is on her hands."
That is all you need to know.