U.S. Supreme Court Rules on Arizona's Immigration Enforcement Law

The U.S. Supreme Court handed down its decision today in Arizona v. United States. At issue is whether federal law preempts the following provisions of Arizona’s omnibus immigration law (SB 1070), enacted in 2010.
http://www.ncsl.org/issues-research/immig/us-supreme-court-rules-on-arizona-immigration-laws.aspx