; and (ii) by striking the period at the end and inserting ; and (B) any substance not covered under subparagraph (A) that was a substance under such section as of December 1, 2018, and specified by the Secretary of Transportation. . (C) Disqualifications Section 31310(b) of title 49, United States Code, is amended by adding at the end the following: (3) In this subsection and subsection (c), the term controlled substance has the meaning given such term in section 31306(a). . (4) FAA provisions Section 45101 of title 49, United States Code, is amended— (A) by striking means any substance and inserting the following: means— (A) any substance ; and (B) by striking the period at the end and inserting ; and (B) any substance not covered under subparagraph (A) that was a substance under such section as of December 1, 2018, and specified by the Secretary of Transportation. . (5) FRA provisions Section 20140(a) of title 49, United States Code, is amended— (A) by striking means any substance and inserting the following: means— (A) any substance ; and (B) by striking the period at the end and inserting ; and (B) any substance not covered under subparagraph (A) that was a substance under such section as of December 1, 2018, and specified by the Secretary of Transportation. . (6) FTA provisions Section 5331(a)(1) of title 49, United States Code, is amended— (A) by striking means any substance and inserting the following: means— (A) any substance ; and (B) by striking the period at the end and inserting