Exception is you have to give your name and provide ID, unless you are actually a criminal. Don't ask. Courts take a tortured view on things.
Judge: Officer Friendly, you must have a clearly articulable basis for claiming you arrest someone on a reasonable suspicion. What was the factual basis for you arrest of the suspect?
Officer Friendly: He refused to show me identification, your honor.
Judge: Why do you consider that as justification for an arrest?
OF: Well, Your honor, the Supreme Court has ruled that a wanted criminal doesn't have to show identification because that would be self-incriminating. So when this defendant refused to identify himself, I had to assume there's a warrant out for him.