So an officer is unable to hold down an uncooperative suspect and force him to breathe into a tube. But the same officer -- who may be a law enforcement professional but is certainly not a medical professional -- is expected to hold down the same uncooperative suspect, insert a needle into his vein and successfully draw an uncontaminated blood sample.
Yeah, what could go wrong with that?
I don't drink at all, and I often tend to side with law enforcement, and I hate lawsuits..... but I smell lawsuit all over that scenario.