I think the failure to effectively deal with drug introduction to prison is a symptom of the way that we divide up our staff from other visitors.
In 2006, when the so-called blue panel report on corrections reviewed correctional practices, drug interdiction was raised as an issue then. The response from the correctional officers' union was to say spend more time, more drug dogs, more ion scanners, and more scrutiny on visitors, and that has been completely ineffective in reducing the amount of drugs in prison.
One then has to start looking at why we aren't looking in other directions. If more scrutiny, more drug dogs, and more ion scans on visitors don't reduce the amount of drugs in prisons, why aren't we looking at contractors, staff, and all of the other various people who come in and out of institutions? I think the jurisdictions that have been most effective in keeping drugs out of prisons have a more holistic view of where the threat is coming from.