Sounds like you're a squish on enforcing the laws on illegal immigration.
Just how do you propose we enforce the law, if you think it's wrong for law enforcement officers to even ask people for proof of legal entry?
Has it occurred to you that if our country aggressively enforced our immigration laws, that in a very short time, no one would be stopped on suspicion of being illegally in this country?
I'm sorry, but illegal immigration is one of the worst problems this country faces. We're either going to get tough about it, or we're going to cease to exist as a sovereign nation.
It sounds like you are a pushover for exchanging liberty for security. We are all already suspect terrorists in the airports lets not all become suspect illegals on the road OK?
“If a cop stops me for running a stop sign, does that mean he demand proof of citizenship for me and everyone in my car?”
I think for the driver, that is a reasonable expectation. We MUST insist that drivers are valid drivers, at least on the roads. We cannot allow illegal aliens to be driving without valid licenses, and they shouldnt be getting licenses - right? ... so non-enforcement leads to absurdities. If you cant have them obey immigration law, how can you expect them to obey traffic law?
“Just how do you propose we enforce the law” ... that’s the point, isn’t it. we have a law, but without local law enforcement and the million eyes and ears they bring, it is impossible to enforce.
I think the civil rights/convenience concerns are addressed by making sure request are only done based on reasonable suspicion / other violation law enforcement actions, and not ‘fishing expedition’ demands for papers.