controversial law which makes it a criminal offense to be in the state without legal status. Of course, the law is a mirror of the federal law that is already on the books, but is loosely enforced.
There are actually many Americans - both natural born citizens and legal immigrants who are tired of the illegal immigrants driving up crime rates, giving all immigrants a bad name, and abusing the social services available for tax paying citizens.
On the other hand, there are those who oppose reform, claiming that it will infringe on the rights of legal immigrants by subjecting them to racial profiling. However, law enforcement cannot stop someone and ask about their immigration status unless they are investigating another issue. For instance, responding to a domestic call or pulling someone over for speeding.
Arizona isn't the only state that wants to pass comprehensive reform. (Although saying 'reform' isn't really what's going on - the laws are already there they just need to be enforced). Other states such as Mississippi, Texas, Michigan - countless others - want the same law as Arizona's SB 1070.
So much will depend on the federal lawsuit pursued by the Obama administration. If the federal government is successful, then enforcing immigration laws will be the responsibility of the federal government and states won't be allowed to do so.