The US Supreme Court has granted review on a case where a person stopped for DWI was forced, without a warrant, to give blood to the officer. He was found to be over the legal limit and the trial court, at the state level, found that his blood was taken in violation of his constitutional rights.
This is the reason you need to hire an experienced Baton Rouge DWI attorney to defend you if you get a DWI. And you need to hire someone who is not afraid to take your case to trial and fight the evidence against you. Do not just walk into court and take what the State wants to give you – hire a good attorney and fight for your rights.