From Guanabee.com: Puerto Rican Man Almost Deported To Mexico:

This is why Arizona SB 1070 will backfire: Immigration authorities in Berwyn, Illinois arrested Puerto Rican Eduardo Caraballo in a stolen car case, but when his mother posted his bail, he was detained because authorities didn’t believe he was a legal citizen. His mother brought his birth certificate, but Eduardo was unable to answer some questions about the island because he’s lived all his life on the mainland. Eduardo was detained for more three days and threatened with deportation–to Mexico.

I don't have any sympathy for car thieves if the man is guilty of what officials are potentially charging him of, but I don't want to see anyone who is a legal citizen deported to a country they were never a citizen of either. Three days to figure out this man was a United States citizen and that he should be tried in a U.S. criminal court if charges are pressed and not deported even after they got his birth certificate?

As Laffy said, "From the Department of Bound to Happen". I guess even if you show your papers that isn't good enough in some parts of Illinois now. Thanks Arizona. Looks like your xenophobia is spreading.