Nonsense. You are naive if you don't understand how incestuous the relations between government officials is. They will cover for other party members if asked, and given sufficient motivation.
And why would the CIA/FBI involve more people than necessary? Perhaps her boss could not be trusted to cooperate. Perhaps her boss has a mistress and blabs. Perhaps her boss has a drinking problem.
You don't realize that they they know all this, do you?
Personally, I think you are overly cynical, and are becoming perilously close to sounding like Grimma Wormtongue..
I choose to believe that there are more good people than bad, that there are men who serve our nation with honor, and that many of those people are currently in Washington.
I suppose your way of looking at things means you are never disappointed, but it is such an unhappy way to go through life. Of course, it does allow you to feel superior to everyone, doesn't it?