Yes. What do you not understand about that?
If cops stopped by my house and asked to come in just to make sure i wasnt a criminal, i would ask them to get off my property. Unless you're following some lead that was substantial enough to merit getting a warrant, leave me alone and go away.
Same thing would apply to a traffic stop. They can run my tag and license and see that i have no record, so anything else about my privacy they wish to explore without a warrant, nope.
The cops have enough criminal leads to follow that they shouldnt be filling their day with searching random citizens for no reason.
but... with that said, i'm a white guy.... so these scenarios are theoretical. Cops are always polite to me.