Last year, the Third Circuit held that a local anti-illegal immigration notice in Hazelton, Pennsylvania, was unconstitutional because it preempted federal law. Today, that decision was vacated by the Supreme Court and remanded back to the lower court "for further consideration in light of Chamber of Commerce of United States of America v. Whiting (last week's Supreme Court case upholding an anti-immigration Arizona law.) This order doesn't mean that the law is considered constitutional as of today, but it sends a strong signal indicating that the Supreme Court would uphold the law if the case came back to it. The court is encouraging the 3rd Circuit to reverse the its earlier decision and save it the trouble.
As Adam says, Whiting doesn't necessarily indicate anything about the constitutionality of Arizona's infamous SB-1070, which is a quite different law. But it's hard to argue that the Hazelton provisions are unconstitutional in the light of last week's ruling.
