One of the examples you gave us from some roadside interventions was that they're not picking up the people who are around .05 to .079 I think it was. Isn't that going to be even more complicated if the person may have smoked a joint or two? Their alcohol level wouldn't go up, and the police would have to try to determine whether the person was impaired or not.
On September 25th, 2017. See this statement in context.