by Max Baumbach*
When a motorist is arrested on suspicion of intoxicated driving, the government cannot compel him to submit to a blood draw without a warrant or warrant exception, nor can it make his refusal to submit to a blood draw a crime. But can the government use the refusal as evidence of guilt in a subsequent DUI prosecution on the basis of an implied consent statute? In this Contribution, Max Baumbach (’21) argues that the Fourth Amendment prohibits the use of blood test refusal evidence in a DUI prosecution where the test itself would have been unlawful to conduct in the first instance.