; (2) in paragraph (2) by striking or ; and (3) by inserting after paragraph (2) the following: (3) that when procuring rolling stock under this chapter— (A) the cost of components and subcomponents produced in the United States is more than 60 percent of the cost of all components of the rolling stock; and (B) final assembly of the rolling stock has occurred in the United States; or . (b) Rule reevaluation Not later than 1 year after the date of enactment of this Act, the Secretary of Transportation shall review the regulations found in section 635.410 of title 23, Code of Federal Regulations, or any similar successor regulations, to determine whether manufactured products other than those containing steel and iron should be considered for the purposes of domestic content preferences. 204. Rail Buy America modernization Section 24305(f) of title 49, United States Code, is amended by adding at the end the following: (5) Before applying for an exemption under paragraph (4), Amtrak shall enter into an arrangement with the National Institute of Standards and Technology to conduct a supplier scouting process for domestic suppliers that can provide the compliant articles, materials, or supplies for which an exemption will be sought. Upon conclusion of the supplier scouting process for a particular article, material, or supply, Amtrak shall submit to the Secretary a scouting report along with the exemption application. The Secretary shall consider the results of the supplier scouting process before making a decision on Amtrak’s exemption application. If the Secretary decides to grant the exemption, the Secretary shall publish in the Federal Register a summary of the scouting report and the reasons for the Secretary’s decision. . 205. FAA Buy America modernization Section 50101 of title 49, United States Code, is amended by adding at the end the following: (d) Supplier scouting Before issuing a waiver under subsection (b), the Secretary shall— (1) consult with the National Institute of Standards and Technology