Danny Birchfield fought the case all the way up to the Supreme Court. With a vote of 7 – 1, it was determined by the highest federal court that laws requiring people to adhere to a chemical test were unconstitutional (at least without a warrant). Breath tests are still deemed constitutional. The chemical test was deemed unconstitutional because of the level of physical intrusion and the availability of other options.

A total of 13 states made it illegal to refuse a chemical test. The punishments for refusal were just as bad as the consequences for a DUI