| A simple query from the Supreme Court is forcing the Obama administration to wrestle with the limits of states' authority to enforce immigration laws -- and also is throwing an uncomfortable spotlight on Secretary of Homeland Security Janet Napolitano. On Monday, the justices asked the Justice Department to provide its views on Arizona's attempt to force employers to verify the immigration status of potential employees. The law being challenged in the cases was signed by Napolitano in 2007, when she was governor of Arizona. Napolitano, who was a defendant in the litigation, has stated that she believes the law is constitutional, but business groups and immigration reform advocates generally in President Barack Obama's camp are asking the Supreme Court to strike down the statute. |