That is entirely possible, and we do know that there are some substances that could potentially cause false positives. That's why it's not meant as a determining factor as to whether somebody is denied a visit. It's part of a package of strategies or techniques to determine whether the individual gets in. That could be one factor that's considered, but there may or may not be intelligence on that. If there's no intelligence to indicate that the visitor or the inmate is involved in the drug subculture.... All of these factors are taken together to determine how that visit will take place, whether there are going to be restrictions placed on the visit, whether the visit is going to be an open visit, or whether the visit will be denied. It's merely one factor.
On March 20th, 2018. See this statement in context.