; or (ii) lost employment-authorized status due to the unlawful acts of the employer under this section. (b) Definitions In this section: (1) Commissioner The term Commissioner means the Commissioner of Social Security. (2) Department Except as otherwise provided, the term Department means the Department of Homeland Security. (3) Employer The term employer means any person or entity, including an agency or department of a Federal, State, or local government, an agent, or a System service provider acting on behalf of an employer, that hires, employs, recruits, or refers for a fee an individual for employment in the United States that is not casual, sporadic, irregular, or intermittent (as defined by the Secretary). (4) Employment authorized status The term employment authorized status means, with respect to an individual, that the individual is authorized to be employed in the United States under the immigration laws of the United States. (5) Secretary Except as otherwise specifically provided, the term Secretary means the Secretary of Homeland Security. (6) System The term System means the Employment Verification System established under subsection (d). (7) Unauthorized alien The term unauthorized alien means an alien who, with respect to employment in the United States at a particular time— (A) is not lawfully admitted for permanent residence