In this Friday, Jan. 30, 2015 photo, attorney Warren Redlich holds up a flyer he designed during an interview in Delray Beach, Fla. The DUI attorney contends that when a driver approaches a police drunk-driving checkpoint, they don't have to speak to the officers. He contends that commonly-used police drunk driving checkpoints violate drivers' constitutional rights. (AP Photo/Lynne Sladky)