SCOTUS ruling on Arizona immigration law leaves more questions than answers

OutFront tonight: show me your papers. Four simple words that mean a lot tonight in Arizona

Depending on how you look at it – or whose spin you believe – the U.S. Supreme Court's ruling today on the controversial Arizona immigration law gave both sides a reason to declare victory.

The court struck down three parts of the law – arresting illegal immigrants without a warrant, requiring people to carry some form of identification, and making it a crime for illegal immigrants to seek work. This was enough for President Obama to issue a statement saying he was "pleased" with the ruling.

But the justices upheld one key part. If police stop someone for any reason, even a simple traffic ticket, the officer can check that person's immigration status if there is "reasonable suspicion" that the person may be an illegal immigrant, a term that remains dangerously vague and critics maintain acts as a gateway to racial profiling.

In other words, show me your papers.