; and (2) with respect to a change in circumstances described in subsection (a)(3), take into account those operations by persons of Mexico under grants of authority in effect as of the date of entry into force of the USMCA are not causing material harm. (e) Assistance to Commission (1) In general At the request of the Commission, the Secretary of Homeland Security shall consult with the Commission and shall collect and maintain such additional data and other information on commercial motor vehicles entering or exiting the United States at a port of entry or exit at the United States border with Mexico as the Commission may request for the purpose of conducting investigations under subsection (a) and shall make such information available to the Commission in a timely manner. (2) Requests for information (A) In general At the request of the Commission, the Secretary of Homeland Security, the Secretary of Transportation, the Secretary of Commerce, the Secretary of Labor, and the head of any other Federal agency shall make available to the Commission any information in their possession, including proprietary information, as the Commission may require in order to assist the Commission in making determinations under subsection (a). (B) Confidential business information The Commission shall treat any proprietary information obtained under subparagraph (A) as confidential business information in accordance with regulations adopted by the Commission to carry out this subtitle. (f) Limited disclosure of confidential business information under protective order The Commission shall promulgate regulations to provide access to confidential business information under protective order to authorized representatives of interested parties who are parties to an investigation under subsection (a). (g) Deadline for determination (1) In general Not later than 120 days after the date on which an investigation is initiated under subsection (a) with respect to a petition, request, or resolution, the Commission shall make a determination