The Justice Department is expected to file a legal challenge Tuesday against Arizona's controversial immigration law, according to an administration official.
During a recent interview with CNN's John King, Arizona Gov. Jan Brewer said that, if the Obama Justice Department winds up suing her state over the law, she'll go to court.
Administration officials have indicated the question of Arizona usurping federal authority to control the border and enforce immigration law is the most likely federal point of attack against the state law signed by Gov. Jan Brewer earlier this year.
This story is developing. We'll bring you the latest information as we get it.