He is put on trial after a snuff film/pornography film ring, involving Schaffer, was discovered. He was also accused in 2001 of these charges. He was cleared on charges of corruption due to the disappearance of many witnesses.
Schaffer's character might have been inspired by Milton Milan, a former mayor of Camden, New Jersey (one of Carcer City's influences) who was convicted with 14 counts of corruption and jailed in 2000.
For more info, see the Gary Schaffer article in Manhunt Wiki.