He was convicted of abusing children in and has been in and out of prison ever since. Some of those tragedies were caused by failures and mistakes from which lessons could be - and were - learnt but, as John Godley, Mappa co-ordinator for the Humberside area pointed out, the system is beset by other problems that are less easily solved. All were returned to custody immediately. I never mean to stop on the bridge but sometimes I find myself watching boys and I don't know how long I've been standing there. It is hard for any system to triumph over such entrenched offending behaviour but the level of supervision of sex offenders, set nationally, seems astonishing to an outside observer. That's where I'd take them,' he says. This is part of an institutional culture if not supported by the prison administration, then accepted by it as inevitable. Sex offenders deemed to be a low risk of recidivism are only permitted to take the non-residential program, while for those deemed to be a high risk, the residential program is the only program made available to them. Thus, the court concluded that no notice issue was implicated. The federal statute differs from state laws such as the Alaska law at issue in Smith in ways that some commentators argue are legally significant. Relevant issues include notice, opportunity for hearing, confrontation and cross-examination, discovery, basis of decision, and availability of counsel. For example, under Arkansas law, it is unlawful for sex offenders assessed by the state to be level three high risk or level four sexually violent predator to live within 2, feet of a school or child care facility. Residency restrictions are a matter of state law but also implicate federal constitutional guarantees.