To reiterate, I said police have 4th amendment privileges for reasonable suspicion and probable cause. As for local regs, hgdf provided that in a post although the link didn't work for me. I agree with what hgdf said. Also, as has been stated in this forum before, if you come upon a CBP checkpoint here in America and you do not possess an ID, you will have an indefinite delay until they are able to identify you.