Who in their right mind would let a minimally trained government employee with a badge draw blood from them while in a hurry on a roadside? What about the issue of cross contamination, and the chain of evidence / custody? What if Chuck Manson gets out on quick government sponsored furlough and they confuse his sample with mine?
I would love to know how many drivers involved in that roadblock rolled their window down and asked these guys “Are you out of your mind?” I think that would have been my first response. Second resonse would be to roll up the window and drive on.