The U.S. Supreme Court has announced it will hear a lawsuit challenging the constitutionality of Arizona’s immigration law, Senate Bill 1070. The law requires police to check the immigration status of anyone they detain and suspect is undocumented. The Supreme Court’s ruling will come down ahead of the 2012 election and could impact immigration laws nationwide. The Supreme Court’s decision to intervene in the dispute was a setback for the Obama administration, which sued to challenge the law and urged the justices to reject Arizona’s appeal.