>> enforcement can't actually compel you to do anything without a trip through the courts.
In theory, but there are so many exceptions that it isn't really a thing in practice. Driving a car? You have to identify yourself. Crossing a boarder? You are open to total inspection. Using a credit card, your transaction is open to inspection and you need to identify. Called as a witness? You have to participate by answering questions. You can even be imprisoned, for years, as a "material witness" without any hint of accusation. They sometimes do need a "trip through the courts" but that doesn't mean you are going to be part of that trip, or even know about it until after the warrants have been issued. The list of exemptions from the default rules allowing silence are so long as to make them meaningless.
In theory, but there are so many exceptions that it isn't really a thing in practice. Driving a car? You have to identify yourself. Crossing a boarder? You are open to total inspection. Using a credit card, your transaction is open to inspection and you need to identify. Called as a witness? You have to participate by answering questions. You can even be imprisoned, for years, as a "material witness" without any hint of accusation. They sometimes do need a "trip through the courts" but that doesn't mean you are going to be part of that trip, or even know about it until after the warrants have been issued. The list of exemptions from the default rules allowing silence are so long as to make them meaningless.