Shame On Arizona

Arizona's governor has signed SB 1070 into law, allowing law enforcement to require that people show ID anytime they have any reasonable suspicion that the person in question might be in the country illegally.  They can lock up people who aren't carrying "their papers".  Gee - I wonder what constitutes reasonable suspicion?  Being Hispanic, perhaps?  Or speaking Spanish?  So much with the treaties we signed with Mexico when annexing that land after the War of American Imperialism, I guess.