They said it was constitutional.
You have to admit though, you see "UCxx Professors" in the title - and you almost immediately jump to the conclusion that they were going to declare the Arizona law UNconstitutional...
I have a feeling that quite a few people are posting comments without having read what the Professors actually said (although I have to admit that it seemed like they only 'grudgingly' claimed the law was constitutional -- and then they had various disclaimers about needing to be careful not to abuse the law, etc, etc...)