NEW : Arizona governor criticizes government lawsuit against immigration law . The state of Arizona, which is suing the federal government, has said it will appeal a judge's ruling that blocked enforcement of parts of Arizona's controversial new law. Justice Department says Arizona improperly preempts federal law . Law requires police to question people suspected of being in U.S. illegally .
NEW : Arizona governor criticizes government lawsuit against immigration law . Key Republican says lawsuit shows `` contempt '' for Americans . Justice Department says Arizona improperly preempts federal law . Law requires police to question people suspected of being in U.S. illegally .