They're no worse than any of the other alphabet agencies filled with unemployable bureaucrats. They wouldn't exist if Clinton's NSA hadn't refused to take Bin Laden from the Sudanese in '96, or if Bush's FBI hadn't ignored the Phoenix Memo.
Sad thing is we're foolishly taking off shoes, getting carded like 18 year olds at a college bar, and being subjected to lame "if you see something" posters, yet Osama is moving around Pakistan more freely than we can move around IAD.