i'm not understanding this

let's say i went to arizona and i was stopped by the police for something or other. sure i carry my drivers license but i sure don't carry my birth certificate with me. how is this going to work? is everyone going to have to carry either their birth certificate or a passport every time they leave their home?

i'm not hispanic, but in a pinch i sure can 'pass' (i can 'pass' for lots of ethnicities by the way)

Arizona Passes Anti-Illegal Immigrant Bill Requiring Police Checks

By Frank James

Arizona's legislature passed one of the toughest anti-illegal immigrant bills in the nation Tuesday that would require law enforcement officers in the state to request immigration documents during police stops.

The controversial bill, which passed the state's Senate Tuesday after being approved earlier by its House, would cement Arizona's reputation for having perhaps the nation's strictest approach to illegal immigration.

The legislation would also bar any city in the state from declaring itself a sanctuary for illegal immigrants.............