Suppose a police officer comes to your home tonight without a warrant and wants you to consent to a search of your residence. If you are like most people, you would say ‘no’: you would assert your Fourth Amendment right to be free from unreasonable searches and seizures. Now suppose the government makes it a crime for you to refuse to consent to the search. That’s what Ohio and several other states have done with DUI laws which criminalize refusing a breath/blood/urine test. Those laws are the subject of cases currently before the United States Supreme Court.