They know Sosa is guilty of a litany of crimes, but they are harder to prove in a court of law and many young girls likely won't cooperate like Bee. So they're going to hit Sosa as hard as they can with the easiest to prove charge and lock him up for 25 years.

Sosa is tied to the train tracks, and his lawyer can use whatever tools they have, and they will not be able to free him. And the full weight of the US Government is barrelling down upon Sosa.