So many hearings and investigations, yet no one is ever held responsible, fired or jailed. Lock them up!
This is because (1) Congress is not a law enforcement body. It is a law making body, and (2) the purpose of their hearings is supposedly "oversight," but in actuality it is political gamesmanship. Discovering truth, making it public, and holding wrongdoers to account are actually the last objectives of congressional hearings.