I can tell you that in states where the drug evaluation classification program has very solid footing, two of them being California and Arizona, the pleas are virtually all guilty pleas. The only way the defence can attack the findings of the evaluation is to attack the credibility of the police officer.
The science is sound. It's supported by different studies. As long as the police officer does everything the way they're supposed to, we're finding right now in Canada that we're getting convictions. We've only had two or three who have been found not guilty. We've never had a case appealed. And we've been doing this program in Canada since 1995, on a voluntary basis.