(a) Pursuant to §655.625(b), the Administrator shall publish in the Federal Register a notice of the Administrator's determination of any investigation regarding the prevailing practice for the use of alien crewmembers for particular longshore activity(ies) in a particular U.S. port (whether under an attestation or under the automated vessel exception). Where the Administrator has determined that the prevailing practice in that U.S. port does not permit such use of alien crewmembers, and no timely request for a hearing is filed pursuant to §655.630, the Administrator's determination shall be the conclusive determination for purposes of the Act and subparts F and G of this part; the DHS and ETA shall, upon notice from the Administrator, take the actions specified in §655.665. Where the Administrator has determined that the prevailing practice in that U.S. port at the time of the investigation permits such use of alien crewmembers, the Administrator shall, in any subsequent investigation, give that determination appropriate weight, unless the determination is reversed in proceedings under §655.630 or §655.655.

(b) Where an interested party, pursuant to §655.630, requests a hearing on the Administrator's determination, the Administrator shall, upon the issuance of the decision of the administrative law judge, publish in the Federal Register a notice of the judge's decision as to the prevailing practice for the longshore activity(ies) and U.S. port at issue, if the administrative law judge:

(1) Reversed the determination of the Administrator published in the Federal Register pursuant to paragraph (a) of this section; or

(2) Determines that the prevailing practice for the particular activity in the port does not permit the use of alien crewmembers.

(c) If the administrative law judge determines that the prevailing practice in that port does not permit such use of alien crewmembers, the judge's decision shall be the conclusive determination for purposes of the Act and subparts F and G of this part (unless and until reversed by the Secretary on discretionary review pursuant to §655.655). The DHS and ETA shall upon notice from the Administrator, take the actions specified in §655.665.

(d) In the event that the Secretary, upon discretionary review pursuant to §655.655, issues a decision that reverses the administrative law judge on a matter on which the Administrator has published notices in the Federal Register pursuant to paragraphs (a) and (b) of this section, the Administrator shall publish in the Federal Register a notice of the Secretary's decision and shall notify the DHS and ETA.

(1) Where the Secretary reverses the administrative law judge and determines that, contrary to the judge's decision, the prevailing practice for the longshore activity(ies) in the U.S. port at issue does not permit the use of alien crewmembers, the Secretary's decision shall be the conclusive determination for purposes of the Act and subparts F and G of this part. Upon notice from the Administrator, the DHS and ETA shall take the actions specified in §655.665.

(2) Where the Secretary reverses the administrative law judge and determines that, contrary to the judge's decision, the use of alien crewmembers is permitted by the prevailing practice for the longshore activity(ies) in the U.S. port at issue, the judge's decision shall no longer have the conclusive effect specified in paragraph (b) of this section. Upon notice from the Administrator, the DHS and ETA shall cease the actions specified in §655.665.