I'm not sure the trafficking was even on the radar at that point. The legal proceedings didn't even start yet. It's no wonder it's not on Wikipedia then.
There were rumors, and lawsuits. However as I mentioned elsewhere in this thread, he was charged with soliciting an underage prostitute -- not child sexual abuse, or child trafficking.
But it's still unclear why the US attorney's office refused to investigate the other cases and offered him a sweetheart deal. In any case, the 2008 charges made it sound like he was just looking for sex, not running a child trafficking ring.