not less than $75,000,000 shall be made available to bring Amtrak-served facilities and stations into compliance with the Americans with Disabilities Act of 1990 ( 42 U.S.C. 2101 et seq.). National network grants to the national railroad passenger corporation To enable the Secretary of Transportation to make grants to the National Railroad Passenger Corporation for activities associated with the National Network as authorized by section 11101(b) of the Fixing America’s Surface Transportation Act (division A of Public Law 114–94 ), $1,300,000,000, to remain available until expended: Provided , That the Secretary may retain up to an additional $2,000,000 of the amounts made available under this heading to fund expenses associated with the State-Supported Route Committee established under section 24712 of title 49, United States Code: Provided further , That none of the funds provided under this heading shall be used by Amtrak to give notice under subsection (a) or (b) of section 24706 of title 49, United States Code, with respect to long-distance routes (as defined in section 24102 of title 49, United States Code) on which Amtrak is the sole operator on a host railroad’s line and a positive train control system is not required by law or regulation, or, except in an emergency or during maintenance or construction outages impacting such routes, to otherwise discontinue, reduce the frequency of, suspend, or substantially alter the route of rail service on any portion of such route operated in fiscal year 2018, including implementation of service permitted by section 24305(a)(3)(A) of title 49, United States Code, in lieu of rail service. Administrative provisions—federal railroad administration (including rescissions) 150. None of the funds made available to the National Railroad Passenger Corporation may be used to fund any overtime costs in excess of $35,000 for any individual employee: Provided, That the President of Amtrak may waive the cap set in the preceding proviso for specific employees when the President of