None of those links prove your and pooh's oft repeated contention that "juries routinely refuse to convict". Try again. I thought you were talking about Tyson or something. Not some obscure case in california, of all places, way back when clinton was still in office.
Then find the convictions - refute that assertion with the facts if you can find them.
I don't think you will. U.S. Attorneys prefer to win cases - losses look bad on their record.