Another celebrity trial

This week Roger Clemens, probably the best major league pitcher in the 1980s and 1990s, goes on trial for perjury.  Clemens testified before Congress that he had not used performance enhancing drugs while a player.  Federal prosecutors decided that his denials were not persuasive and will present evidence that they think indicates Clemens was lying. 

Nice column today by Allen Barra on the Daily Beast that captures my sentiments on the matter exactly -- why are the feds wasting are precious tax dollars on this?  The cost is $120 million so far.  Imagine how much we would have to spend if we were to prosecute everyone who ever lied to Congress!  One also might wonder why Congress has the time and resources to conduct hearings on the behavior of a retired player.  Not sure how any of this passes a cost-benefit test.