The problem is that it's a government regulation regarding everyone, because now everyone must prove that they're not a subject of this new law.
Do you think there should there be police on every corner you must submit your ID to to prove you're not an illegal immigrant?
Imagine having to show your ID demonstrating you’re not subject to the law punishing you for driving a car without a driving license.
Is that not literally what everyone has to do in order to consume alcohol?