How did BO lie on a bar exam?
Two things if I remember correctly. He lied about his past drug possession/use, (which would have constituted a felony, and thereby prevented him from getting a law license in the first place) and he lied about never having used another name or alias.
It was all written up in the bar complaint back in 2008. It was this bar complaint that caused him to voluntarily give up his law license rather than face a disbarment hearing.