; (II) his or her social security number or alien file number; (III) the name and contact information for his or her current employer; and (IV) any other critical information that the Assistant Secretary determines to be appropriate. (v) Other referral The Director of U.S. Citizenship and Immigration Services shall refer to the Assistant Secretary for Immigration and Customs Enforcement for appropriate action by the Assistant Secretary, or for referral by the Assistant Secretary to another law enforcement agency, as appropriate— (I) any case in which the Director believes that a social security number has been falsely or fraudulently used