Notwithstanding any other provision in this part, nothing in this part shall apply:

(a) To any action that pertains to foreign or military affairs, or to a national security or homeland security function of the United States (other than guidance documents involving procurement or the import or export of articles and services subject to the Department's jurisdiction);

(b) To any action related to a criminal investigation or prosecution, including undercover operations, or any civil enforcement action or related to a criminal investigation or prosecution, including undercover operations, or any civil enforcement action or related investigation by the Department of Justice, including any action related to a civil investigative demand under 18 U.S.C. 1968;

(c) To any investigation of misconduct by a Department employee or any disciplinary, corrective, or employment action taken against a Department employee;

(d) To any document or information that is exempt from disclosure under the Freedom of Information Act (FOIA), 5 U.S.C. 552(b); or

(e) In any other circumstance or proceeding to which application of this section, or any part of this part, would, in the judgment of the Secretary, undermine the national security.