; and (B) in accordance with paragraph (4), shall not be eligible for employment at the Department, including at any National Laboratory. (4) Subsequent employment at the Department (A) In general A covered foreign national shall not be eligible for employment at the Department, including at any National Laboratory, if the covered foreign national previously refused to submit to a polygraph examination under this section. (B) Change in status A foreign national who is lawfully admitted for permanent residence shall not be eligible for employment at the Department, including at any National Laboratory, if the foreign national previously refused to submit to a polygraph examination under this section at a time when the foreign national was a covered foreign national. (f) Savings provision Nothing in this section authorizes the Secretary to require an individual who is not a covered foreign national to submit to a polygraph examination.