States can impose their own stiff penalties on illegal immigrants and others who steal identities to get jobs, a federal appeals court ruled Monday, upholding Arizonas law and dealing a setback to immigrant rights advocates. The decision is yet another victory for Maricopa County Sheriff Joe Arpaio and more broadly for Arizona, which has been a pioneer in trying to find ways to punish illegal immigrants, stepping into a void left by the Bush and Obama administrations.