They allow the rich and powerful in Washington to control potential damaging evidence and the exposure of criminal acts committed by our government leaders and their rich patrons.
They subpoena[ tie up] all documents,evidence and witnesses to make sure the public or any legitimate investigator can't get to them.
.They make sure no one who is in either party who dances the Potomac two-step ever goes to jail or if money is involved [aka The UN Oil Scandal] any money is recovered.
The worst is they make the American people think they are really going to nail someone while they use our tax money to pay the legal eagles to make sure that they and no one they know gets named or goes to jail.
They can't afford to send anyone important to prison because they might blow the whistle on everyone else's game.
In other words we just spent 23 million dollars over ten years to make sure nothing happened or nothing was found out they didn't want us or a grand jury to know.
The next time you hear "congressional investigation" think damage control and cover up and watch witnesses and documents disappear in the "Black Hole" of subpoena,gag orders and endless delay.
I couldn't have said it any better myself.
YOU NAILED IT.
EXACTLY bump!
We must get rid of the professional politician in DC.