Immigration law

[TracyCoxx]

There's been a recent court ruling that upholds the rights of states to punish businesses for hiring illegal immigrants. In Arizona, if a business knowingly hires illegals, the first time there's a 10 day penalty against them, and the next time the business loses their license. This law was signed by Napolitano and upheld by the 9th Circuit (the most liberal of all the circuit courts).

Obama actually has a problem with this and wants the Supreme Court to overrule this decision. Why? Someone please explain this to me.

There's also the ongoing uproar over Arizona's new law, which is almost word for word the same as an already existing federal law. What is the problem? Why the uproar for enforcing laws that already exist?