Below is a great ad by the Public Campaign Action Fund, showing how Colorado Teabagger Ken Buck used his position in the US Attorneys office to help a gun dealer charged with 37 criminal counts escape justice--before taking the man's money in the form of a campaign contribution to run for the Senate.
Buck thought it proper to trash his own case to the defendant's lawyers, instead of fighting to send the bad guys to prison for putting together a gun-running operation. The result of Buck's behavior, which he has admitted was "wrong" (euphemism for corrupt, or being too stupid to live?), is that the defendant only was found guilty of one misdemeanor. From 37 criminal charges to 1 misdemeanor? No wonder this guy ponied up cash for Buck's Senate run.
For this egregious behavior Buck was reprimanded, had to take ethics classes (those obviously stuck), and was eventually pushed out of his job as a federal prosecutor "under a cloud."