; (2) in subsection (c)(4) by adding at the end the following: The Secretary may not approve a grant under this section for project in an area determined to be a specified ineligible jurisdiction. ; and (3) in subsection (k)(4) by adding at the end the following: (C) Revocation Any obligation or future obligation and contingent commitments made under this section may be revoked due to a finding that the project is located in a specified ineligible jurisdiction. . (b) Guidance updates Not later than 90 days after the date of enactment of this Act, the Secretary of Transportation shall update guidance issued pursuant to section 5309(k)(6) of title 49, United States Code, to carry out the amendments made by this section.