The cardinal stepped down as archbishop in February 2013 after three priests and one former priest alleged Cardinal O'Brien had made sexual advances toward them 20 years earlier.
The Vatican has released the complete letter by Pope Emeritus Benedict XVI about Pope Francis after facing criticism for manipulating a photograph of it.
The archbishop of Guam, Anthony Sablan Apuron O.F.M. Cap., is found guilty of some of the accusations against him, including the sexual abuse of minors.