If it passes... any person in AZ can now be pulled out of raking his yard, buying an ice cream cone, going for a morning jog, etc.
He will have to present official documents showing identity.
If he doesn't have it, he will be charged.
Now, I understand crime there sucks and they need to pull a few troops from iraq and put them on the border, I'm cool with that.
But you guys are looking at the smaller picture. Police have discretion, and many times, they are bad apples. You have the right to go about your business. Wait til this shit is legal. They'll put your ass in cuffs on the curb until they're satisfied you're legal. You just assume it'll be a friendly chat with a smiling officer.
Wait til you're on the curb cuffed, and the paperwork is taking conveniently long enough for them to check, that they look thru your car, etc. or if there are 30 ppl in the crowd detained, and you end up sitting there all night.