Ok, I didn't read every post, but notice there were several that mentioned that if Arizona companies stopped employing immigrants that it would help the problem.  But... The problem is two-fold.  First there is the argument that immigration takes jobs from americans and they don't pay taxes.  Maybe partially true in some cases.  2.  Many crimes are committed by illegal aliens.  This is true. 

So what happens if companies in AZ stop hiring?  Immigrants will go somewhere else.  Problem is, with AZ being a border state, you will still see immigrants passing through, but now they will commit more crimes to get money to make it to Colorado or elsewhere. 

In my opinion, the best solution is to determine status when the opportunity exists and follow the law (send them back).  This does not mean hunt them down.  It just means gov. agencies should ask for documentation.  This includes, schools, police, fire, hospitals, libraries.  Do not provide services (obviously if someone is hurt you should treat them then deport them).  Pretty simple, enforce the law that is all.  Do not agressively go after immigrants, just enforce the law and let everyone share the responsiblity.

1 : tending to arouse suspicion : questionable <suspicious characters>
2 : disposed to suspect : distrustful <suspicious of strangers>
3 : expressing or indicative of suspicion <a suspicious glance>

I think a mountain has been made out of a molehill, here.  I read the first few pages and the following seems to be true:

• Only those already elligible for "contact" will be questioned.  Reasonably, you shouldn't be pulled over just to check your ID - the officer must have cause.  If they do not have cause, it's not the law's fault.  It's the officer's fault.  The offers will do what they will, doesn't make it right.  In Minnesota we had a law for a long time that made not wearing a seatbelt illegal but it was only enforced if you were pulled over for another reason.  Now it's a primary offense.  But I have to assume some cops pulled folks over for lots of "dumb" reasons to give the seatbelt ticket.   They are human.
• As already pointed out, asking for an ID is no big deal.  Even if a person is stopped on the street (like the public drunkenness example), it's not unreasonable to ask for an ID.  If I (a very pale causasian girl with a Minnesota accent) was stumbling around at 2 am without my ID - I think it's reasonable for a police officer to request it my ID.  I assume there's another law that states you must have a state issued ID in one of those categories. Does anyone know?
• Only if a person is actually arrested are they required to prove their immigration status.   Otherwise it's when "practiceable." 

The lawmakers shouldn't be responsible for proving the negative here.  They are simply building in a way, that works across the board, to help them identify lawbreakers.

Stop and Identify statutes

Fear mongering that's all this is, no fact, no substance, plain and simple.

Please site out of the statute where you come up with this opinion.

It is sad that the State of Arizona had to pass such a law.  The feds are not doing their jobs - period.  Furthermore, the cities are actively working against solving the illegal immigration problem by forbidding their police forces to check the citizenship status of suspects who are arrested for other crimes.  (I think it is called "sanctuary city" and includes both Phoenix and Tuscon)  The people are completely frustrated with no one presenting a solution to their problems that arise from illegal immigration (the people in Texas are not far behind either). 

By the way - everyone yammering on about racial profiling...  what "race" are hispanic people?  Last I checked they were "causasian".    Minor point I know, but I have become very sensitive to everyone throwing the "race" term around every time something comes up they don't agree with.   Perhaps we should call it statistical profiling...  statistically speaking the probability of a hispanic being an illegal immigrant is much higher by several orders of magnitude than the "blonde" person that everyone loves to throw about.   That is the facts - like it or not....