If you read the transcript of Cardinal Law’s deposition, it was clear why he wasn’t jailed: He had “doctor’s notes” to return the pervs to active service. Our own government was turning them loose from prisons with the same notes at the time Law was; since then we’ve started “civilly committing” them (keeping them in prison after their terms are served because the shrinks feel they’ll do it again once free). The whole scandal was horrible, but I think there were much worse players than Law.
Actually Cardinal Law wasn’t jailed because at the time it was not a crime to not report child abuse. Now with mandatory reporting of child abuse he would be in jail for multiple offenses.