Same reason most cards are dealt FACE DOWN, and same reason you keep a straight face, when you have four aces.
It is highly unlikely the Clintons will be held accountable for all the underhanded and illegal things they did, or we think they did.
But, it is possible to bust up their gang.
"Think" they did??"
They're sitting ducks should Dubya Bush instruct the DoJ to investigate HALF the skeletons in BOTH the respective Clinton closets.
"But, it is possible to bust up their gang."
Yes. By cutting out the heart (see above)