On Sat, 15 May 2010 16:06:53 -0700, Gordon wrote:

Wrong. The Arizona cops can only check for evidence of citizenship
on a legal stop for something else. Speeding? Are you a citizen?
Rob a bank? Got papers? etc

Any cop that has been on the job for a while can always find probable
cause for a stop, even if only for the old "tail light not working"
trick, which suddenly and mysteriously starts working again on the
side of the road. I've seen it happen.