Subject: Re: been warning about this for a while
I've said before...how many of us could prove our residency or citizenship status on a random stop?

If you're a citizen, you don't have to prove your status at a random stop.

If you're a legal resident and not a citizen, you're required to carry documentation of your residency status with you at all times. The easiest way to do that is to carry the literal "green card" that you get with lawful permanent resident status.