Illegal immigrants plan to leave over Ariz. law
Many day laborers like Diaz say they will leave Arizona because of the law, which also makes it a state crime to be in the U.S. illegally and directs police to question people about their immigration status if there is reason to suspect they are illegal immigrants.

http://apnews.myway.com/article/20100429/D9FCDCN00.html

This would be interesting:

Ah…he’s probably got a bunch of them stashed in his wallet depending on the circumstances which one to use.