fulfilled his or her pre-SORNA registration requirements, is the sex offender required to register under SORNA? With respect to sex offenders with pre-SORNA or pre-SORNA-implementation convictions who remain in the prisoner, supervision, or registered sex offender populations at the time of implementati

for the registration offense—i.e., the sex offense for which he was convicted in 1980—because that time is past. With respect to sex offenders with pre-SORNA or pre-SORNA-implementation convictions who remain in the prisoner, supervision, or registered sex offender populations at the time of implementati