In accordance with section 139 of title 23, the Maritime Administrator may approve any action qualifying as a categorical exclusion applicable to the Federal Highway Administration, the Federal Transit Administration, or the Federal Railroad Administration when the applicable requirements of that categorical exclusion have been met that are in compliance with the National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.), and any other applicable law. Nothing in this section shall be interpreted to limit any existing authority of the Maritime Administration to approve, promulgate, or publish categorical exclusions consistent with the National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.) or any other applicable law.