; and (II) less than 1 year has elapsed since the Commission made its report to the President of the results of such previous investigation. (ii) Exception Clause (i) shall not apply with respect to an investigation if the Commission determines good cause exists to conduct the investigation. (e) Regulations The Commission and the Secretary of Transportation are authorized to promulgate such rules and regulations as may be necessary to carry out this subtitle. 325. Confidential business information Section 202(a)(8) of the Trade Act of 1974 ( 19 U.S.C. 2252(a)(8) ) is amended in the first sentence by striking and title III of the United States-Panama Trade Promotion Agreement Implementation Act and inserting , title III of the United States-Panama Trade Promotion Agreement Implementation Act, and subtitle C of title III of the United States-Mexico-Canada Agreement Implementation Act . 326. Conforming amendments (a) Registration of motor carriers Section 13902 of title 49, United States Code, is amended by inserting at the end the following: (j) Mexico-Domiciled motor carriers Notwithstanding any other provision of this section, upon an order in accordance with section 324(a) of the United States-Mexico-Canada Agreement Implementation Act, the Secretary shall carry out the relief specified by denying or imposing limitations on a request for registration or capping the number of requests for registration by Mexico-domiciled motor carriers of cargo to operate beyond the municipalities along the United States-Mexico international border and the commercial zones of those municipalities as directed. . (b) Effective periods of registration Section 13905 of title 49, United States Code, is amended by inserting at the end the following: (g) Mexico-Domiciled motor carriers Notwithstanding any other provision of this section, upon an order in accordance with section 324(a) of the United States-Mexico-Canada Agreement Implementation Act, the Secretary shall carry out the relief specified by revoking or imposing limitations on